Author
Updated
10 Nov 2024Form Number
LP1607PDF size
140 pages, 5.2 MB* Only available in selected markets
- Introduction
- Did you know?
- Key features
- Comparing the SR645 V3 to the SR645
- Components and connectors
- System architecture
- Standard specifications
- Models
- Processors
- Memory options
- Internal storage
- Controllers for internal storage
- Internal drive options
- Internal backup units
- Optical drives
- I/O expansion
- Network adapters
- Fibre Channel host bus adapters
- SAS adapters for external storage
- Flash storage adapters
- GPU adapters
- Cooling
- Power supplies
- Systems management
- Security
- Rack installation
- Operating system support
- Physical and electrical specifications
- Operating environment
- Water infrastructure for the Lenovo Neptune Processor DWC Module
- RM100 In-Rack Coolant Distribution Unit
- Warranty upgrades and post-warranty support
- Services
- Lenovo TruScale
- Regulatory compliance
- External drive enclosures
- External storage systems
- External backup units
- Fibre Channel SAN switches
- Uninterruptible power supply units
- Power distribution units
- Rack cabinets
- KVM console options
- Lenovo Financial Services
- Seller training courses
- Related publications and links
- Related product families
- Trademarks
Abstract
The Lenovo ThinkSystem SR645 V3 is a 2-socket 1U server that features the 5th Gen AMD EPYC 9005 "Turin" family of processors . With up to 160 cores per processor and support for the new PCIe 5.0 standard for I/O, the SR645 V3 offers the ultimate in two-socket server performance in a 1U form factor.
This product guide provides essential pre-sales information to understand the ThinkSystem SR645 V3 server, its key features and specifications, components and options, and configuration guidelines. This guide is intended for technical specialists, sales specialists, sales engineers, IT architects, and other IT professionals who want to learn more about the SR645 V3 and consider its use in IT solutions.
Change History
Changes in the November 10, 2024 update:
- Added the following cable kit - Field upgrades section:
- ThinkSystem SR645 V3 Internal Raid Adapter Cable Option Kit, 4X97A87602
- Added a column to the GPU table indicating which GPUs are Controlled - GPU adapters section
Changes in the November 8, 2024 update:
- The following power supply is withdrawn from marketing - Power supplies section
- ThinkSystem 1100W -48V DC Hot-Swap Gen2 Power Supply, 4P57A26296
Changes in the November 5, 2024 update:
- Added the following drives - Internal drive options section:
- ThinkSystem 2.5" U.3 PM1733a 15.36TB Read Intensive NVMe PCIe 4.0 x4 HS SSD, 4XB7A81954
- ThinkSystem 2.5" U.3 PM1733a 3.84TB Read Intensive NVMe PCIe 4.0 x4 HS SSD, 4XB7A81952
Introduction
The Lenovo ThinkSystem SR645 V3 is a dense, high performance, 2-socket 1U rack server. It is suitable for small businesses to large enterprises, and especially cloud service providers. The server features the 5th Gen AMD EPYC 9005 "Turin" family of processors and support for the new PCIe 5.0 standard for I/O. It is designed to handle a wide range of workloads such as cloud computing, virtualization, VDI, enterprise applications, and database management.
The server offers a broad selection of drive and slot configurations and offers high performance features. Outstanding reliability, availability, and serviceability (RAS) and high-efficiency design can improve your business environment and can help save operational costs.
Did you know?
The SR645 V3 server offers onboard NVMe PCIe ports that allow direct connections to 12x NVMe SSDs, which frees up PCIe slots and helps lower NVMe solution acquisition costs.
Key features
Combining performance and flexibility, the SR645 V3 server is a great choice for enterprises of all sizes. The server offers a broad selection of drive and slot configurations and offers high performance features that industries such as finance, healthcare and telco need. Outstanding reliability, availability, and serviceability (RAS) and high-efficiency design can improve your business environment and can help save operational costs.
Scalability and performance
The following features boost performance, improve scalability and reduce costs:
- Supports one or two 5th Gen AMD EPYC 9005 processors
- Up to 160 cores and 320 threads
- Core speed of up to 4.0 GHz
- TDP rating of up to 400 W
- Supports one or two 4th Gen AMD EPYC 9004 processors
- Up to 128 cores and 256 threads
- Core speed of up to 4.1 GHz
- TDP rating of up to 400 W
- Support for DDR5 memory DIMMs to maximize the performance of the memory subsystem:
- Up to 24 DDR5 memory DIMMs, 12 DIMMs per processor
- 12 memory channels per processor (1 DIMM per channel)
- DIMM speeds up to 6000 MHz
- Using 256GB 3DS RDIMMs, the server supports up to 6TB of system memory
- Supports up to five single-width GPUs, each up to 75W for substantial processing power in a 1U system.
- The server is Compute Express Link (CXL) v1.1 Ready. With CXL 1.1 for next-generation workloads, you can reduce compute latency in the data center and lower TCO. CXL is a protocol that runs across the standard PCIe physical layer and can support both standard PCIe devices as well as CXL devices on the same link.
- Supports up to 12x 2.5-inch hot-swap drive bays, by using combinations of front-accessible (up to 10 bays) and rear-accessible (2 bays).
- Supports four 3.5-inch drive bays for lower-cost high-capacity HDD storage. 2.5-inch and 3.5-inch drive bays can be mixed if desired.
- Supports 12x NVMe drives without the need for additional NVMe adapters and without oversubscription of PCIe lanes (1:1 connectivity). Additional NVMe support with the use of NVMe Retimer adapters, also without oversubscription. The use of NVMe drives maximizes drive I/O performance, in terms of throughput, bandwidth, and latency.
- Supports 12x SATA drives using the onboard SATA controller (no additional adapter needed), enabling lower cost, high capacity storage solution for cold storage workloads.
- Supports 12x SAS drives using a variety of support RAID controllers or SAS HBAs.
- Supports high-speed RAID controllers from Lenovo and Broadcom providing 12 Gb SAS connectivity to the drive backplanes. A variety of PCIe 3.0 and PCIe 4.0 RAID adapters are available.
- Supports two externally accessible 7mm hot-swap drives for operating system boot functions or data storage. Optional RAID with the addition of a RAID adapter installed in a slot.
- Supports M.2 drives for convenient operating system boot functions or data storage. Available M.2 adapters support either one M.2 drive or two M.2 drives. Optional RAID with the addition of a RAID adapter installed in a slot.
- Supports up to 5x PCIe slots, 3x at the rear of the server and 2x at the front of the server. Also supports 1x OCP 3.0 slot, either in the front or in the rear.
- The server has a dedicated industry-standard OCP 3.0 small form factor (SFF) slot, with a PCIe 5.0 x16 interface, supporting a variety of Ethernet network adapters. Simple-swap mechanism with thumbscrews and pull-tab enables tool-less installation and removal of the adapter. Supports shared BMC network sideband connectivity to enable out-of-band systems management.
- The server offers PCI Express 5.0 (PCIe Gen 5) I/O expansion capabilities that doubles the theoretical maximum bandwidth of PCIe 4.0 (32GT/s in each direction for PCIe 5.0, compared to 16 GT/s with PCIe 4.0). A PCIe 5.0 x16 slot provides 128 GB/s bandwidth, enough to support a 400GbE network connection.
- The server uses the Lenovo Neptune closed-loop liquid-cooled heatsink design to more effectively remove heat from high-performance processors.
Availability and serviceability
The server provides many features to simplify serviceability and increase system uptime:
- Designed to run 24 hours a day, 7 days a week
- The server uses ECC memory and supports memory RAS features including Single Device Data Correction (SDDC, also known as Chipkill), Patrol/Demand Scrubbing, Bounded Fault, DRAM Address Command Parity with Replay, DRAM Uncorrected ECC Error Retry, On-die ECC, ECC Error Check and Scrub (ECS), and Post Package Repair.
- The server offers hot-swap drives, supporting RAID redundancy for data protection and greater system uptime.
- Available M.2 configuration with RAID support which can enable two SATA or two NVMe M.2 drives to be configured as a redundant pair.
- The server has up to two hot-swap redundant power supplies and up to eight hot-swap redundant fans to provide availability for business-critical applications.
- Optional front-accessible slots and drives so that most major components and cables (except power) are located at the front of the server
- The power-source-independent light path diagnostics uses LEDs to lead the technician to failed (or failing) components, which simplifies servicing, speeds up problem resolution, and helps improve system availability.
- Solid-state drives (SSDs) offer more reliability than traditional mechanical HDDs for greater uptime.
- Proactive Platform Alerts (including PFA and SMART alerts): Processors, voltage regulators, memory, internal storage (SAS/SATA HDDs and SSDs, NVMe SSDs, M.2 storage, flash storage adapters), fans, power supplies, RAID controllers, server ambient and subcomponent temperatures. Alerts can be surfaced through the XClarity Controller to managers such as Lenovo XClarity Administrator, VMware vCenter, and Microsoft System Center. These proactive alerts let you take appropriate actions in advance of possible failure, thereby increasing server uptime and application availability.
- The built-in XClarity Controller 2 continuously monitors system parameters, triggers alerts, and performs recovery actions in case of failures to minimize downtime.
- Built-in diagnostics in UEFI, using Lenovo XClarity Provisioning Manager, speed up troubleshooting tasks to reduce service time.
- Lenovo XClarity Provisioning Manager supports diagnostics and can save service data to a USB key drive or remote CIFS share folder for troubleshooting and reduce service time.
- Auto restart in the event of a momentary loss of AC power (based on power policy setting in the XClarity Controller service processor)
- Offers a diagnostics port on the front of the server to allow you to attach an external diagnostics handset for enhanced systems management capabilities.
- Support for the XClarity Administrator Mobile app running on a supported smartphone and connected to the server through the service-enabled USB port, enables additional local systems management functions.
- Three-year or one-year customer-replaceable unit and onsite limited warranty, 9 x 5 next business day. Optional service upgrades are available.
Manageability and security
Systems management features simplify local and remote management:
- The server includes an XClarity Controller 2 (XCC2) to monitor server availability. Optional upgrade to XCC Platinum to provide remote control (keyboard video mouse) functions, support for the mounting of remote media files, FIPS 140-3 security, enhanced NIST 800-193 support, boot capture, and other management and security features.
- Lenovo XClarity Administrator offers comprehensive hardware management tools that help to increase uptime, reduce costs and improve productivity through advanced server management capabilities.
- UEFI-based Lenovo XClarity Provisioning Manager, accessible from F1 during boot, provides system inventory information, graphical UEFI Setup, platform update function, RAID Setup wizard, operating system installation function, and diagnostic functions.
- Support for Lenovo XClarity Energy Manager which captures real-time power and temperature data from the server and provides automated controls to lower energy costs.
- An integrated industry-standard Unified Extensible Firmware Interface (UEFI) enables improved setup, configuration, and updates, and simplifies error handling.
- Support for industry standard management protocols, IPMI 2.0, SNMP 3.0, Redfish REST API, serial console via IPMI
- An integrated hardware Trusted Platform Module (TPM) supporting TPM 2.0 enables advanced cryptographic functionality, such as digital signatures and remote attestation.
- Administrator and power-on passwords help protect from unauthorized access to the server.
- Supports AMD Secure Root-of-Trust, Secure Run and Secure Move features to minimize potential attacks and protect data as the OS is booted, as applications are run and as applications are migrated from server to server.
- Supports Secure Boot to ensure only a digitally signed operating system can be used.
- Industry-standard Advanced Encryption Standard (AES) NI support for faster, stronger encryption.
- Additional physical security features are a chassis intrusion switch and a lockable front bezel.
Energy efficiency
The following energy-efficiency features help save energy, reduce operational costs, and increase energy availability:
- Energy-efficient planar components help lower operational costs.
- High-efficiency power supplies with 80 PLUS Titanium certifications
- Low-voltage 1.1 V DDR5 memory offers energy savings compared to 1.2 V DDR4 DIMMs, an approximately 20% decrease in power consumption
- Solid-state drives (SSDs) consume as much as 80% less power than traditional spinning 2.5-inch HDDs.
- The server uses hexagonal ventilation holes, which can be grouped more densely than round holes, providing more efficient airflow through the system and thus keeping your system cooler.
- Optional Lenovo XClarity Energy Manager provides advanced data center power notification and analysis to help achieve lower heat output and reduced cooling needs.
Comparing the SR645 V3 to the SR645
The ThinkSystem SR645 V3 improves on the previous generation SR645, as summarized in the following table.
Components and connectors
The following figure shows the front of the SR645 V3.
Figure 2. Front view of the ThinkSystem SR645 V3 with 3.5-inch drive bays
For details on the front ports, including the optional front VGA port and front external diagnostic port, see the Local management section.
The following figure shows the various front configurations supported by the SR645 V3. As shown, the server supports 2.5-inch, 3.5-inch or E1.S EDSFF drive bays. In some configurations, the front of the server includes a pull-out operator panel with LCD dislay. The SR645 V3 also supports a configuration with 4x 2.5-inch drive bays + 3x front-accessible PCIe slots - a low-profile slot, a full-height slot, and an OCP 3.0 slot.
Figure 3. Front configurations of the ThinkSystem SR645 V3
The following figure shows the components visible from the rear of the server. As shown, there are five different configurations available, including two with rear-mounted drive bays: two 2.5-inch hot-swap drive bays (SAS, SATA or NVMe) or 7mm thickness hot-swap drives (SATA or NVMe). There are two configurations with a full-height slot, one where both slots are connected to CPU 1, and the other where the full-height slot is connected to CPU 2.
Standard specifications
The following table lists the standard specifications.
Components | Specification |
---|---|
Machine types | 7D9D - 1 year warranty 7D9C - 3 year warranty |
Form factor | 1U rack. |
Processor | One or two AMD EPYC processors, either 5th Gen 9005 ("Turin") or 4th Gen 9004 ("Genoa"). Supports processors up to 160 cores, core speeds of up to 4.1 GHz, and TDP ratings of up to 400W. Supports PCIe 5.0 for high performance I/O. |
Chipset | Not applicable (platform controller hub functions are integrated into the processor) |
Memory | 24 DIMM slots with two processors (12 DIMM slots per processor). Each processor has 12 memory channels, with 1 DIMM per channel (DPC). Lenovo TruDDR5 RDIMMs, 3DS RDIMMs, and 9x4 RDIMMs are supported. Memory speeds up to 6000 MHz with 5th Gen AMD EPYC processors. |
Memory maximum | Up to 6TB with 24x 256GB 3DS RDIMMs |
Persistent memory | Not supported |
Memory protection | ECC, SDDC, Patrol/Demand Scrubbing, Bounded Fault, DRAM Address Command Parity with Replay, DRAM Uncorrected ECC Error Retry, On-die ECC, ECC Error Check and Scrub (ECS), Post Package Repair |
Disk drive bays |
Up to 4x 3.5-inch or 12x 2.5-inch hot-swap drive bays:
See Storage configurations for details. AnyBay bays support SAS, SATA or NVMe drives. NVMe bays only support NVMe drives. Rear drive bays can be used in conjunction with 2.5-inch front drive bays. The server supports up to 12x NVMe drives all with direct connections (no oversubscription). |
Maximum internal storage |
|
Storage controller |
|
Optical drive bays | No internal optical drive |
Tape drive bays | No internal backup drive |
Network interfaces | Dedicated OCP 3.0 SFF slot with PCIe 5.0 x16 host interface, either at the rear of the server (rear-accessible) or the front of the server (front-accessible, PCIe 4.0). Supports a variety of 2-port and 4-port adapters with 1GbE, 10GbE and 25GbE network connectivity. One port can optionally be shared with the XClarity Controller 2 (XCC2) management processor for Wake-on-LAN and NC-SI support. Additional PCIe network adapters supported in PCIe slots. |
PCI Expansion slots |
Up to 5x slots, 3x at the rear and 2x at the front, plus 1 OCP 3.0 slot. Rear: Up to 3x PCIe slots (2x PCIe 5.0, 1x PCIe 4.0), all with rear access, plus a slot dedicated to the OCP adapter. Slot availability is based on riser selection and rear drive bay selection. Slot 3 requires two processors. Four choices for rear-access slots:
For 2.5-inch front drive configurations, the server supports the installation of a CFF RAID adapter or HBA in a dedicated area that does not consume any of the PCIe slots. Front: The server also supports slots at the front of the server:
Note: Not all slots are available in a 1-processor configuration. See the I/O expansion for details. |
GPU support | Supports up to 5x single-wide GPUs |
Ports |
Front: 1x USB 3.2 G1 (5 Gb/s) port, 1x USB 2.0 port (also for XCC local management), External diagnostics port, optional VGA port. Rear: 3x USB 3.2 G1 (5 Gb/s) ports, 1x VGA video port, 1x RJ-45 1GbE systems management port for XCC remote management. Optional 2nd XCC remote management port (installs in OCP slot). Optional DB-9 COM serial port (installs in slot 3). Internal: 1x USB 3.2 G1 (5 Gb/s) connector for operating system or license key purposes. |
Cooling | Up to 8x N+1 redundant hot swap 40 mm fans, configuration dependent. One fan integrated in each power supply. For high-performance CPUs, the SR645 V3 also offers a closed-loop liquid-cooled heatsink design to more effectively remove heat from the processors. For customers with water infrastructure in their data center, the SR645 V3 also offers Lenovo Neptune Core open-loop water cooling for efficient heat removal. |
Power supply | Up to two hot-swap redundant AC power supplies, 80 PLUS Platinum or 80 PLUS Titanium certification. 500 W, 750 W, 1100 W and 1800 W AC options, supporting 220 V AC. 500 W, 750 W and 1100 W options also support 110V input supply. In China only, all power supply options support 240 V DC. Also available is a 1100W power supply with a -48V DC input. |
Video | Embedded video graphics with 16 MB memory with 2D hardware accelerator, integrated into the XClarity Controller. Maximum resolution is 1920x1200 32bpp at 60Hz. |
Hot-swap parts | Drives, power supplies, and fans. |
Systems management | Operator panel with status LEDs. Optional External Diagnostics Handset with LCD display. Models with 8x 2.5-inch front drive bays can optionally support an Integrated Diagnostics Panel. XClarity Controller 2 (XCC2) embedded management based on the ASPEED AST2600 baseboard management controller (BMC). Dedicated rear Ethernet port for XCC2 remote access for management. Optional 2nd redundant XCC2 remote port supported, installs in the OCP slot. XClarity Administrator for centralized infrastructure management, XClarity Integrator plugins, and XClarity Energy Manager centralized server power management. Optional XCC Platinum to enable remote control functions and other features. |
Security features | Chassis intrusion switch, Power-on password, administrator's password, Root of Trust module supporting TPM 2.0 and Platform Firmware Resiliency (PFR). Optional lockable front security bezel. |
Operating systems supported | Microsoft Windows Server, Microsoft Windows 10 & 11, Red Hat Enterprise Linux, SUSE Linux Enterprise Server, VMware ESXi, Ubuntu Server. See the Operating system support section for specifics. |
Limited warranty | Three-year or one-year (model dependent) customer-replaceable unit and onsite limited warranty with 9x5 next business day (NBD). |
Service and support | Optional service upgrades are available through Lenovo Services: 4-hour or 2-hour response time, 6-hour fix time, 1-year or 2-year warranty extension, software support for Lenovo hardware and some third-party applications. |
Dimensions | Width: 440 mm (17.3 in.), height: 43 mm (1.7 in.), depth: 773 mm (30.4 in.). See Physical and electrical specifications for details. |
Weight | Maximum: 20.2 kg (44.6 lb) |
Models
ThinkSystem SR645 V3 models can be configured by using the Lenovo Data Center Solution Configurator (DCSC).
Topics in this section:
CTO models
ThinkSystem SR645 V3 models can be configured by using the Lenovo Data Center Solution Configurator (DCSC).
Configure-to-order (CTO) models are used to create models with factory-integrated server customizations. For CTO models, two types of base CTO models are available for the SR645 V3 as listed in the columns in the following table:
- General purpose base CTO models are for general business (non-HPC) and is selectable by choosing General Purpose mode in DCSC.
- AI and HPC base models are intended for Artificial Intelligence (AI) and High Performance Computing (HPC) configurations and solutions are enabled using the AI & HPC Hardware - ThinkSystem Hardware mode in DCSC. These configurations, along with Lenovo EveryScale Solutions, can also be built using System x and Cluster Solutions Configurator (x-config). Tip: Some HPC and AI models are not listed in DCSC and can only be configured in x-config.
Controlled GPU models: The "Controlled GPU" base CTO models listed in the table are the only models that support high-performance GPUs and accelerators. These models are classified under US Government ECCN regulations and have limited market and customer availability. All other base models do not support high-performance GPUs.
Preconfigured server models may also be available for the SR645 V3, however these are region-specific; that is, each region may define their own server models, and not all server models are available in every region.
The following table lists the base CTO models of the ThinkSystem SR645 V3 server.
CTO models for Windows 10 and Windows 11
The SR645 V3 can run Windows 10 and Windows 11, however only a subset of adapters and drives can be installed. For ease of configuration, the following Base CTO models have been announced to assist building a configuration that can be used with the client operating systems. For more information, see the Windows 10 and Windows 11 section.
Base feature codes
Models of the SR645 V3 are defined based on whether the server has 2.5-inch drive bays at the front (called the 10x 2.5" chassis or simply the 2.5-inch chassis) or whether it has 3.5-inch drive bays at the front (called the 3.5-inch chassis). For models with front PCIe slots, the SR645 V3 also offers a separate base feature code.
The feature codes for these chassis bases are as listed in the following table.
Preconfigured models
The following tables list the available preconfigured models, grouped by region.
- Models for Asia Pacific region
- Models for Australia and New Zealand
- Models for EMEA region
- Models for India
- Models for Latin American countries (except Brazil)
- Models for USA and Canada
Refer to the Specifications section for information about standard features of the server.
Common to all models:
- Power supplies are Platinum unless otherwise stated
- All models include a Toolless Slide Rail Kit
Models for Asia Pacific region
The following table lists the models for the Asia Pacific region: Australia, Bangladesh, Brunei, Hong Kong, India, Japan, Korea, Sri Lanka, Malaysia, New Zealand, Philippines, Singapore, Thailand, Taiwan, Vietnam
† Processor description: Processor model, number of cores, thermal design power (TDP), core frequency
Models for Australia and New Zealand
AP models: Customers in Australia and New Zealand also have access to the Asia Pacific region models.
Common to all Australia and New Zealand models:
- All models include a Toolless Slide Rail Kit and Cable Management Arm
† Processor description: Processor model, number of cores, thermal design power (TDP), core frequency
Models for EMEA region
† Processor description: Processor model, number of cores, thermal design power (TDP), core frequency
Models for India
AP models: Customers in India also have access to the Asia Pacific region models.
† Processor description: Processor model, number of cores, thermal design power (TDP), core frequency
Models for Latin American countries (except Brazil)
† Processor description: Processor model, number of cores, thermal design power (TDP), core frequency
Models for USA and Canada
† Processor description: Processor model, number of cores, thermal design power (TDP), core frequency
Processors
The SR645 V3 supports processors in the fourth-generation AMD EPYC family of processors. The server supports one or two processors.
Topics in this section:
Processor options
The SR645 V3 supports the following processor families:
- 5th Gen AMD EPYC processors (formerly codenamed "Turin"):
- Processors with Zen 5 architecture, with high per-core performance
- Processors with Zen 5c architecture, with high core density and best power efficiency
- 4th Gen AMD EPYC processors (formerly codenamed "Genoa")
- 4th Gen AMD EPYC processors with AMD 3D V-Cache (formerly codenamed "Genoa-X"), with larger L3 caches, suitable for engineering workloads like EDA and CFD
- 4th Gen AMD EPYC processors with Zen 4c architecture (formerly codenamed "Bergamo"), with higher core counts, suitable for workloads like cloud-native applications
All supported processors have the following characteristics:
- 12 DDR5 memory channels
- 128 PCIe 5.0 I/O lanes, 64 lanes available for PCIe and NVMe devices
Configuration notes:
- The processor option part numbers marked as "Planned" are planned to be orderable in mid-4Q/2024
- Processor options include a heatsink but do not include a system fan
- Processors with a P suffix are single-socket capable processors and are only available in configure-to-order builds or in preconfigured models. These processors are not available as option part numbers.
- In the SR645 V3, 4th Gen processors with a TDP of 320W or more are only supported with liquid cooling and both processors must be configured. As a result, processors are CTO only and no field upgrades are available.
- The following 5th Gen processors are only supported with liquid cooling and both processors must be configured:
- ThinkSystem AMD EPYC 9175F 16C 320W 4.2GHz Processor, C2AR
- ThinkSystem AMD EPYC 9275F 24C 320W 4.1GHz Processor, C2AT
- ThinkSystem AMD EPYC 9375F 32C 320W 3.85GHz Processor, C2AJ
- ThinkSystem AMD EPYC 9475F 48C 400W 3.65GHz Processor, C2A3
- ThinkSystem AMD EPYC 9575F 64C 400W 3.3GHz Processor, C4H8
The following table lists the 5th Gen AMD EPYC processors supported by the SR645 V3.
The following table lists the 4th Gen AMD EPYC processors supported by the SR645 V3.
Processor features
The following table lists the features of the supported 5th Gen AMD EPYC processors.
† The maximum single-core frequency that the processor is capable of operating
** Processors with a P suffix are single-socket capable processors; Processors with an F suffix are frequency-optimized processor
The following table lists the features of the supported 4th Gen AMD EPYC processors.
† The maximum single-core frequency that the processor is capable of operating
** Processors with a P suffix are single-socket capable processors; Processors with an F suffix are frequency-optimized processor
One-processor configurations
The SR645 V3 can be used with only one processor installed. Most core functions of the server (including the XClarity Controller) are connected to processor 1 as shown in the System architecture section.
With only one processor, the server has the following capabilities:
- 12 memory DIMMs
- Slot 1 and Slot 2 are available; Slot 3 is not available
Drive support and controller support is as listed in the Storage configurations section - see the CPUs column in the tables for the configurations that support 1 processor.
Thermal requirements by processor
For thermal requirements for processors, see the Thermal Rules section in the Lenovo Docs site for the SR645 V3:
https://pubs.lenovo.com/sr645-v3/thermal_rules
The SR645 V3 supports three different processor cooling solutions, depending on the configuration, as listed in the following table.
Feature code | Description | Purpose |
---|---|---|
BQ26 | ThinkSystem SR645 V3/SR635 V3 1U High Performance Heatsink (Neptune Thermal Transfer Module) | Performance 1U heatsink with two satellite heatsinks. Automatically selected based on the server configuration. |
BS34 | ThinkSystem SR645 V3 Neptune Liquid to Air Module | Enables closed-loop liquid cooling of the processors. See the Lenovo Neptune Liquid to Air Module section. |
BZGM | ThinkSystem V3 Neptune Processor Direct Water Cooling Solution | Enables open-loop liquid cooling of the processors. See the Lenovo Neptune Processor DWC Module section. |
Lenovo Neptune Liquid to Air Module - Closed-loop liquid cooling
The Lenovo Neptune Liquid to Air (L2A) Module is a closed-loop liquid-cooled processor heatsink, and is primarily used for processors with a high TDP.
The use of the closed-loop heatsink allows the following configurations that the performance heatsink cannot support:
- 9384X/9184X/9274F/9374F/9474F processors in the 2.5-inch chassis
- 9684X processors with a 8x2.5-inch or 10x2.5-inch front drive backplane
- 9734/9754 processors with a 10x2.5-inch front drive backplane
- Support for up to 30°C ambient for all Group E processors (320W ≤ TDP ≤ 400W)
The following figure shows the placement of the components in the closed-loop liquid-cooled solution. Cold plates are mounted on top of each processor and these are connected via aluminum tubes to a radiator that is placed in front of the system fans. The tubes contain a mixture of water and ethylene glycol (EGW). The liquid is actively pumped through the pipes in a closed loop to remove the heat from the processors.
Figure 7. SR645 V3 with closed water loop (feature BS34)
The Neptune Liquid to Air Module is only available in CTO orders, not as a field upgrade. Ordering information is listed in the following table.
Part number | Feature code | Description |
---|---|---|
CTO only | BS34* | ThinkSystem SR645 V3 Neptune Liquid to Air Module |
* In DCSC, this feature code is listed in the Processor tab
The closed-loop liquid-cooled heatsink has the following requirements:
- Two CPUs are required (any TDP)
- Performance fans are required
- One of the following 2.5-inch front drive bay configurations:
- 10x 2.5'' SAS/SATA
- 10x 2.5'' NVMe Gen4
- 6x SAS/SATA + 2x AnyBay + 2x NVMe
- 6x SAS/SATA + 4x AnyBay
- 8x 2.5'' SAS/SATA
- 4x 2.5" SAS/SATA
- 4x 2.5" NVMe
- Configurations without a front drive backplane
- The following drive bay configurations are not supported:
- 10x 2.5'' NVMe Gen5
- 10x 2.5'' AnyBay Gen5
- 10x 2.5'' AnyBay Gen4
- 3.5" drive bays
- EDSFF drive bays
- If a RAID 940 or 9350 adapter is configured:
- RAID supercap must be installed in slot 3
- 7mm drives
- The following components are not supported:
- 256GB 3DS RDIMMs
- Rear 2.5-inch drives
- M.2 adapter
- Front PCIe slots
- 7mm SATA
- Any internal RAID/HBAs (CFF form factor)
For more information, see the Thermal Rules page:
https://pubs.lenovo.com/sr645-v3/thermal_rules
Additional ambient temperature restrictions may apply. See the Operating environment section for details.
Lenovo Processor Neptune Core Module - Open-loop liquid cooling
The SR645 V3 also supports advanced direct-water cooling (DWC) capability with the Lenovo Processor Neptune Core Module. This module implements a liquid cooling solution where heat from the processors is removed from the rack and the data center using an open loop and coolant distrubution units.
With the Processor Neptune Core Module, all heat generated by the processors is removed from the server using water. This means that the server fans and data center air conditioning units only need to remove the heat generated by the other components. This results in lower air conditioning costs and it enables the use of slower fans which results in lower overall power consumption.
The following figure shows the Lenovo Processor Neptune Core Module.
Figure 8. Lenovo Processor Neptune Core Module
The Processor Neptune Core Module also includes a leak detection module which can detect a leakage of more than 0.5ml (about 10 drops) along the length of the tube and then issue an event to the XClarity Controller. XCC will then post an error to the System Event Log and enable further actions. Once the liquid evaporates, a further event is issue to XCC.
The Processor Neptune Core Module is only available in CTO orders, not as a field upgrade. Ordering information is listed in the following table.
Part number | Feature code | Description |
---|---|---|
CTO only | BZGM* | ThinkSystem V3 Neptune Processor Direct Water Cooling Solution |
* In DCSC, this feature code is listed in the Processor tab
Configuration notes:
- The Processor Neptune Core Module requires water infrastructure be available in the rack cabinet and data center, as described in the Water infrastructure section.
- All processor SKUs are supported
- Two CPUs are required; Configurations with one processor are not supported
- All front drive bay configurations are supported
- Slot 2 is not available for adapters - the water loop is routed through the space otherwise occupied by slot 2
- Only the following slot configurations are supported:
- 2x Low profile x16 slots, in slot 1 and slot 3
- 1x Low profile x16 slot in slot 1, and 2x 7mm drives in slot 3
- Rear 2.5-inch drive bays are not supported
- RAID flash power module (supercap) support is limited only to positions 1 (2.5-inch drives only) or position 3 (slot 3), as described in the RAID flash power module (supercap) support section. Location 2 on the air baffle is not supported.
- M.2 adapters are supported based on the configurations in the Storage configurations section
- Standard fans can be configured in most configurations
- The use of a cable management arm (CMA) is not supported
For more information, see the Thermal Rules page:
https://pubs.lenovo.com/sr645-v3/thermal_rules
The following figure shows the Lenovo Neptune Processor DWC Module installed in the SR645 V3.
Figure 9. Lenovo Neptune Processor DWC Module installed in the SR645 V3
UEFI operating modes
The SR645 V3 offers preset operating modes that affect energy consumption and performance. These modes are a collection of predefined low-level UEFI settings that simplify the task of tuning the server to suit your business and workload requirements.
The following table lists the feature codes that allow you to specify the mode you wish to preset in the factory for CTO orders.
UK and EU customers: For compliance with the ERP Lot9 regulation, you should select feature BFYA. For some systems, you may not be able to make a selection, in which case, it will be automatically derived by the configurator.
Feature code | Description |
---|---|
BFYA | Operating mode selection for: "Maximum Efficiency Mode" |
BFYB | Operating mode selection for: "Maximum Performance Mode" |
The preset modes for the SR645 V3 are as follows:
- Maximum Efficiency Mode (feature BFYA): Maximizes performance/watt efficiency while maintaining reasonable performance
- Maximum Performance Mode (feature BFYB): Achieves maximum performance but with higher power consumption and lower energy efficiency.
For details about these preset modes, and all other performance and power efficiency UEFI settings offered in the SR645 V3, see the paper "Tuning UEFI Settings for Performance and Energy Efficiency on AMD Processor-Based ThinkSystem Servers", available from https://lenovopress.lenovo.com/lp1267.
Platform Secure Boot
Platform Secure Boot (PSB) is a feature of AMD EPYC processors that helps defend against threats to firmware. It is designed to provide protection in response to growing firmware-level remote attacks being seen across the industry. AMD Secure Boot extends the AMD silicon root of trust to help protect the system by establishing an unbroken chain of trust from the AMD silicon root of trust to the BIOS. The UEFI secure boot helps continue the chain of trust from the system BIOS to the OS Bootloader. This feature helps defend against remote attackers seeking to embed malware into firmware.
With PSB enabled, the processor is cryptographically bound to the server firmware code signing key once the processors are installed in the server and the server is powered on. From that point on, that processor can only be used with motherboards that use the same code signing key.
Disabling PSB will stop the protection against remote and local attackers seeking to embed malware into a platform’s firmware, BIOS and even UEFI functions. Disabling PSB also allows you to install the processor in another server that you purchased from Lenovo, however, we do not recommend you do this by yourself. Please contact the Lenovo service team for further assistance.
By default, the server has Platform Secure Boot enabled on the installed processors, however for factory orders, you can choose to have the server with PSB disabled. To do this, select feature code C18D as listed in the following table. PSB can be later enabled in System Setup if desired.
Cannot be disabled once enabled: Once you enable PSB in a server, it cannot be disabled on those processors.
If you add a second processor as a field upgrade and your server has PSB enabled, then as soon as you install the processor and power the server on, the processor is then cryptographically bound to the server, and can only be used in that server going forward.
Note: Platform Secure Boot (PSB) is different from the Secure Boot security feature described in the Platform Firmware Resiliency section.
Memory options
The SR645 V3 uses Lenovo TruDDR5 memory operating at up to 6000 MHz with 5th Gen AMD EPYC processors, and up to 4800 MHz with 4th Gen AMD EPYC processors. The server supports up to 24 DIMMs with 2 processors. The processors have 12 memory channels and support 1 DIMM per channel. The server supports up to 6TB of memory using 24x 256GB 3DS RDIMMs and two processors.
Lenovo TruDDR5 memory uses the highest quality components that are sourced from Tier 1 DRAM suppliers and only memory that meets the strict requirements of Lenovo is selected. It is compatibility tested and tuned to maximize performance and reliability. From a service and support standpoint, Lenovo TruDDR5 memory automatically assumes the system warranty, and Lenovo provides service and support worldwide.
The following table lists the memory options supported in the SR645 V3 with 5th Gen AMD EPYC processors.
The following table lists the memory options supported in the SR645 V3 with 4th Gen AMD EPYC processors.
9x4 RDIMMs (also known as Optimized or EC4 RDIMMs) are a lower-cost DDR5 memory option supported in ThinkSystem V3 servers. 9x4 DIMMs offer the same performance as standard RDIMMs (known as 10x4 or EC8 modules), however they support lower fault-tolerance characteristics. Standard RDIMMs and 3DS RDIMMs support two 40-bit subchannels (that is, a total of 80 bits), whereas 9x4 RDIMMs support two 36-bit subchannels (a total of 72 bits). The extra bits in the subchannels allow standard RDIMMs and 3DS RDIMMs to support Single Device Data Correction (SDDC), however 9x4 RDIMMs do not support SDDC. Note, however, that all DDR5 DIMMs, including 9x4 RDIMMs, support Bounded Fault correction, which enables the server to correct most common types of DRAM failures.
For more information on DDR5 memory, see the Lenovo Press paper, Introduction to DDR5 Memory, available from https://lenovopress.com/lp1618.
The following rules apply when selecting the memory configuration:
- Memory rated at 4800 MHz is only supported with 4th Gen processors. Memory rated at 6400 MHz memory is only supported with 5th Gen processors (and operates at up to 6000 MHz).
- The SR645 V3 supports quantities 1, 2, 4, 6, 8, 10, 12 DIMMs per processor; other quantities not supported
- The server supports four types of DIMMs: 9x4 RDIMMs, 10x4 RDIMMs, x8 RDIMMs and 3DS RDIMMs
- UDIMMs and LRDIMMs are not supported
- Mixing of DIMM types is not supported (for example, 9x4 DIMMs with 10x4 RDIMMs)
- Mixing of DRAM technology (16Gb, 24Gb, 32Gb) is not supported. See the column in the above table.
- Mixing of 128GB 3DS RDIMMs and 256GB 3DS RDIMMs is not supported
- Mixing of 128GB 3DS RDIMMs (features BYEE and BQ3A) is not supported
- Mixing of 256GB 3DS RDIMMs (features BZPN and BQ3B) is not supported
- Mixing x4 and x8 DIMMs is not supported
- Mixing of DIMM rank counts is supported. Follow the required installation order installing the DIMMs with the higher rank counts first.
- Mixing of DIMM capacities is supported, however only two different capacities are supported across all channels of the processor (eg 16GB and 32GB). Follow the required installation order installing the larger DIMMs first.
- Memory operates at the speed of the memory bus of the processor - see the Processor features section for specifics
- The use of the 128GB 3D RDIMM feature BYEE has the following requirements for thermal reasons:
- Performance fans are required
- Rear 2.5-inch drives are not supported
- GPUs are not supported
- Additional ambient temperature requirements - see https://pubs.lenovo.com/sr645-v3/thermal_rules for information
Note: Memory mirroring and memory rank sparing are not supported.
For best performance, consider the following:
- Ensure the memory installed is at least the same speed as the memory bus of the selected processor.
- Populate all 12 memory channels with identical DIMMs (same Lenovo part number)
The following memory protection technologies are supported:
- ECC detection/correction
- Bounded Fault detection/correction
- SDDC (for x4-based memory DIMMs; look for "x4" in the DIMM description. Not supported with 9x4 RDIMMs)
- Patrol/Demand Scrubbing
- DRAM Address Command Parity with Replay
- DRAM Uncorrected ECC Error Retry
- On-die ECC
- ECC Error Check and Scrub (ECS)
- Post Package Repair
Internal storage
The SR645 V3 supports 4x 3.5-inch or 12x 2.5-inch or 16x EDSFF drive bays, depending on the selected chassis and backplane configuration. The server also supports configurations without any drive bays if desired.
The two drive bay zones are as follows:
- Front:
- 4x 3.5-inch hot-swap bays, or
- Up to 10x 2.5-inch hot-swap bays, or
- 16x EDSFF hot-swap bays
- Rear:
- 2x 2.5-inch hot-swap bays, or
- 2x 7mm hot-swap drives bays
All drives are hot-swap and are accessible from the front or from the rear.
The server also supports one or two M.2 drives, installed in an M.2 adapter internal to the server.
In this section:
NVMe drive support
The SR645 V3 supports NVMe drives to maximize storage performance:
- In 2.5-inch front drive configurations, the server supports up to 12 NVMe drives without oversubscription (that is, each x4 drive has a dedicated x4 connection (4 lanes) to the processor):
- 10x 2.5-inch NVMe drives at the front
- 2x 2.5-inch NVMe drives at the rear
- In 3.5-inch front drive configurations, the server supports up to 6 NVMe drives without oversubscription:
- 4x 3.5-inch NVMe drives at the front
- 2x 2.5-inch NVMe drives at the rear
- In EDSFF front drive configurations, the server supports up to 16 NVMe drives without oversubscription:
- 16x E1.S NVMe drives at the front
The specifics of these configurations are covered in the Storage configurations section.
In addition, the SR645 V3 supports two 7mm NVMe drives for use as boot drives. These two drives optionally support RAID via a separate RAID adapter installed in a PCIe slot.
The RAID 940-8i and RAID 940-16i adapters also support NVMe through a feature named Tri-Mode support (or Trimode support). This feature enables the use of NVMe U.3 drives at the same time as SAS and SATA drives. Tri-Mode requires an AnyBay backplane. Cabling of the controller to the backplanes is the same as with SAS/SATA drives, and the NVMe drives are connected via a PCIe x1 link to the controller.
NVMe drives connected using Tri-Mode support provide better performance than SAS or SATA drives: A SATA SSD has a data rate of 6Gbps, a SAS SSD has a data rate of 12Gbps, whereas an NVMe U.3 Gen 4 SSD with a PCIe x1 link will have a data rate of 16Gbps. NVMe drives typically also have lower latency and higher IOPS compared to SAS and SATA drives. Tri-Mode is supported with U.3 NVMe drives and requires an AnyBay backplane.
Tri-Mode requires U.3 drives: Only NVMe drives with a U.3 interface are supported. U.2 drives are not supported. See the Internal drive options section for the U.3 drives supported by the server.
Front drive bays
The front drive bay zone supports the following configurations. All drives are hot-swap.
- 3.5-inch hot-swap drive bays
- 4x SAS/SATA 3.5-inch
- 4x AnyBay 3.5-inch (PCIe Gen4)
- 2x SATA + 2x SATA/NVMe 3.5-inch (PCIe Gen4)
- 2.5-inch hot-swap drive bays without support for front PCIe slots
- 4x SAS/SATA
- 4x NVMe (PCIe Gen4 or Gen5)
- 8x SAS/SATA
- 10x SAS/SATA
- 6x SAS/SATA + 4x AnyBay (PCIe Gen4 or Gen5)
- 6x SAS/SATA + 2x AnyBay + 2x NVMe (PCIe Gen4 or Gen5)
- 10x AnyBay (PCIe Gen4 or Gen5)
- 10x NVMe (PCIe Gen4 or Gen5)
- 2.5-inch hot-swap drive bays with support for front PCIe slots
- 2x NVMe (PCIe Gen4)
- 4x NVMe (PCIe Gen4 or Gen5)
- 4x AnyBay (PCIe Gen5)
- EDSFF drive bays
- 16x E1.S (9.5mm or 15mm) hot-swap NVMe drive bays (PCIe Gen4)
- Drive-less 2.5-inch configuration - No backplane and no drives (supports field upgrades)
- Drive-less 3.5-inch configuration - No backplane and no drives (supports field upgrades)
These configurations are shown in the following three figures. The feature codes listed correspond to the feature codes listed in the table below the figures.
The following figure shows the supported 3.5-inch and EDSFF drive bay configurations. EDSFF drive configurations can be configured with or without an Integrated Diagnostics Panel with pull-out LCD display. See the Local management section for details.
Figure 10. SR645 V3 front drive bay configurations - 3.5-inch and EDSFF drive bays
The following figure shows the supported 2.5-inch drive bays drive bay configurations without PCIe slot support.
8x 2.5-inch drive configurations can be configured with or without an Integrated Diagnostics Panel with pull-out LCD display. See the Local management section for details.
Figure 11. SR645 V3 front drive bay configurations - 2.5-inch drive bays without front PCIe slot support
The following figure shows the supported 2.5-inch drive bays drive bay configurations with front PCIe slot support. Front slots can be used with rear slots. See the I/O expansion for details.
Figure 12. SR645 V3 front drive bay configurations - 2.5-inch drive bays with front PCIe slot support
The backplanes used to provide these drive bays are listed in the following table.
Field upgrades: Most front backplanes are available as part numbers for field upgrades using upgrade kits, as described in the Field upgrades section below.
Rear 2.5-inch and 7mm drive bays
The SR645 V3 supports hot-swap drives installed at the rear of the server chassis. Supported configurations are as follows:
- 2x 2.5-inch hot-swap SAS/SATA drive bays
- 2x 2.5-inch hot-swap NVMe drive bays (PCIe Gen 4)
- 2x 7mm SAS/SATA drive bays
- 2x 7mm NVMe drive bays (PCIe Gen 4)
The configurations are shown in the following figure.
The backplanes used to provide these drive bays in CTO orders are listed in the following table. Backplanes are also available as part numbers for field upgrades using upgrade kits, as described in the Field upgrades section below.
The SR645 V3 supports three different 7mm drive options installed in slot 3:
- 7mm drive backplane supporting SATA or NVMe drives, without integrated RAID. Optional RAID functionality is provided by a separate RAID adapter installed in a slot (feature BU0N)
- 7mm drive backplane supporting NVMe drives (no SATA support) with integrated RAID support via an onboard Marvell 88NR2241 NVMe RAID controller (feature B8Q2)
- 7mm drive backplane supporting SATA or NVMe drives with integrated RAID support via an onboard Broadcom RAID controller (feature BYFG)
The use of rear 2.5-inch drive bays has the following configuration rules:
- With 2.5-inch rear drive bays, only slot 1 is available. Slot 2 and 3 are not available
- GPUs are not supported
The use of the 7mm rear drive bays has the following configuration rules:
- 7mm rear drive bays occupy slot 3; slots 1 and 2 are available and slot 2 is a low profile slot. Slot 3 is not available.
- GPUs are not supported
- For ThinkSystem 7mm SATA/NVMe 2-Bay Rear Enablement Kit v2 (feature BU0N):
- The 7mm drive bays support either SATA drives or NVMe drives but not both. You specify SATA or NVMe in the configurator using feature codes BTTV (SATA) or BTTW (NVMe).
- If RAID support is not required, the 7mm drives connect to an onboard port; No additional adapter is required
- If RAID support is required, select feature code BS7A in the configurator to enable RAID
- The support of RAID-1 with the 7mm drives requires an additional RAID adapter that is installed in PCIe slot 2:
- RAID support for 7mm SATA drives requires a RAID 5350-8i adapter (feature BT7N)
- RAID support for 7mm NVMe drives requires a RAID 540-8i adapter operating in Tri-Mode (feature BT7P)
- The RAID adapter used for 7mm drive support cannot be configured for use with other drive bays (not even with M.2)
- For ThinkSystem 1U 7mm Drive Kit w/ NVMe RAID (feature B8Q2)
- The adapter only supports NVMe drives
- RAID functionality is integrated into the 7mm backplane using a Marvell 88NR2241 NVMe RAID Controller
- For ThinkSystem 7mm SATA/NVMe 2-Bay Rear Hot-Swap RAID Enablement Kit (feature BYFG)
- The 7mm drive bays support either SATA drives or NVMe drives but not both.
- RAID functionality is integrated into the 7mm backplane using a Broadcom RAID Controller
- Supports RAID-0, RAID-1
- M.2 and 7mm are supported together in certain combinations, as listed in the table in the following section.
7mm and M.2 supported combinations
The following table lists the supported combinations of 7mm drives and M.2 drives.
Storage configurations
This section describes the various combinations of front and rear drives that the server supports, as well as M.2 support.
Tip: These tables are based on the Config Matrix in TRD V2.9
In this section:
- Overview - 3.5-inch front bays
- Overview - 2.5-inch front bays without front slots
- Overview - 2.5-inch front bays with front slots
- Details - 3.5-inch drive bay chassis configurations
- Details - 2.5-inch drive bay chassis configurations without front slots
- Details - 2.5-inch drive bay chassis configurations with front slots
The following tables summarize the storage configurations for the SR645 V3. For details, including processor requirements, M.2 and 7mm support, and controller selections, see the Details tables.
Overview - 3.5-inch front bays
The following table summarizes the configurations that use 3.5-inch front drive bays.
Click to jump down to the details of the 3.5-inch configurations.
Return to Storage configurations.
Overview - 2.5-inch front bays without front slots
The following table summarizes the configurations that use 2.5-inch front drive bays but do not support front PCIe slots.
Click to jump down to the details of the 2.5-inch configurations.
Return to Storage configurations.
Overview - 2.5-inch front bays with front slots
The following table summarizes the configurations that use 2.5-inch front drive bays and support front PCIe slots.
Click to jump down to the details of the 2.5-inch configurations.
Return to Storage configurations.
Details - 3.5-inch front bays
The following table lists the detailed configurations that use 3.5-inch front drive bays.
Click to go back to the overview of 3.5-inch configurations.
Return to Storage configurations.
In the table:
- M.2 x4 SATA/NVMe Non-RAID means the M.2 SATA/x4 NVMe adapter (4Y37A79663) with either SATA or NVMe drives. RAID is not supported.
- M.2 x4 SATA/NVMe with SFF RAID means the M.2 SATA/x4 NVMe adapter (4Y37A79663) with either SATA or NVMe drives. RAID is supported with the addition of the RAID 5350-8i adapter (SATA drives only) or RAID 540-8i adapter (NVMe drives only) in a rear slot.
- M.2 x1 SATA Non-RAID means the M.2 SATA/x1 NVMe adapter (4Y37A09738) with SATA drives. NVMe drives not supported. RAID is not supported.
- M.2 x1 NVMe Non-RAID means the M.2 SATA/x1 NVMe adapter (4Y37A09738) with NVMe drives. SATA drives not supported. RAID is not supported.
- M.2 NVMe RAID means the M.2 RAID NVMe adapter (B8P9) with NVMe drives. SATA drives not supported. RAID-0 and RAID-1 are supported with the integrated Marvell RAID controller.
- M.2 SATA/NVMe RAID means the M.2 RAID SATA/NVMe adapter (BYFF) with SATA or NVMe drives. RAID-0 and RAID-1 are supported with the integrated Broadcom RAID controller.
- 7mm SATA Non-RAID means the 7mm SATA/NVMe kit (BU0N) with SATA drives. RAID is not supported.
- 7mm NVMe Non-RAID means the 7mm SATA/NVMe kit (BU0N) with NVMe drives. RAID is not supported.
- 7mm NVMe RAID means the 7mm NVMe RAID kit (B8Q2) with NVMe drives. SATA drives not supported. RAID-0 and RAID-1 are supported with the integrated Marvell RAID controller.
- 7mm SATA/NVMe RAID means the 7mm SATA/NVMe RAID kit (BYFG) with SATA or NVMe drives. RAID-0 and RAID-1 are supported with the integrated Broadcom RAID controller.
- 7mm SATA with SFF RAID 5350-8i means the 7mm SATA/NVMe kit (BU0N) with SATA drives. NVMe drives not supported. RAID is supported with the addition of the RAID 5350-8i adapter in a rear slot.
- 7mm NVMe with SFF RAID 540-8i means the 7mm SATA/NVMe kit (BU0N) with NVMe drives. SATA drives not supported. RAID is supported with the addition of the RAID 540-8i adapter in a rear slot.
Details - 2.5-inch front bays without front slots
The following table lists the detailed configurations that use 2.5-inch front drive bays without front PCIe slots.
Click to go back to the overview of 2.5-inch configurations.
Return to Storage configurations.
Details - 2.5-inch front bays with front slots
The following table lists the detailed configurations that use 2.5-inch front drive bays without front PCIe slots.
Click to go back to the overview of 2.5-inch configurations.
Return to Storage configurations.
Field upgrades
Topics in this section:
- 2.5-inch and 3.5-inch drive bay upgrades
- 7mm drive bay upgrades
- Upgrades to Internal (CFF) RAID adapter
2.5-inch and 3.5-inch drive bay upgrades
The SR645 V3 is orderable without drive bays, allowing you to add a backplane, cabling and controllers as field upgrades. Rear backplane kits included cables, however for front drive bays, the backplane kits do not include cables and must be ordered separately. The following table summarizes the option part numbers you will need to order for each available drive configuration.
For more information about the backplane kits and cable kits, see the Lenovo Server Options site:
https://serveroption.lenovo.com/cable_kit_options/
Tip: There is no upgrade path to add drive bays if the SR645 V3 already has a backplane, without removing the existing backplane. For example, you cannot upgrade a 4x 2.5-inch drive bay to 8 bays without first removing the existing backplane.
When adding drive bays, you will also need to add the appropriate storage controller(s). Consult the tables in the Storage configurations section to determine what controller sections are supported and what additional controllers you will need. Controllers are described in the Controllers for internal storage section.
7mm drive bay upgrades
For field upgrades to add 7mm drive bays, order one of the part numbers listed in the following table.
Upgrades to Internal (CFF) RAID adapter
It is also supported to upgrade a server from an onboard SATA controller to an internal (CFF) RAID adapter, without changing any backplanes. In addition to ordering the RAID adapter, you will also need to order the cable kit listed in the following table.
Part number | Description |
---|---|
4X97A87602 | ThinkSystem SR645 V3 Internal Raid Adapter Cable Option Kit |
RAID flash power module (supercap) support
The SR645 V3 supports 1x RAID adapter flash power module (supercap). The adapters that this applies to are as follows:
- Any supported RAID 9350 adapter
- Any supported RAID 940 adapter, including RAID 940-8e
There are two possible locations for supercaps, depending on the front drive bays (2.5-inch or 3.5-inch) and the size of the processor heatsinks. Details are summarized in the following table. Location references are shown in the figure below.
* The Closed-loop liquid heatsink is only supported with 2.5-inch front drives without front PCIe slots
The locations where supercaps are installed is shown in the following figure.
Figure 14. Location of the supercaps in the SR645 V3
If you plan to add one of the RAID adapters that includes a supercap as a field upgrade, then you will also need to order a supercap installation kit for the power module. For CTO orders, the components in the installation kit are automatically derived when you select the RAID adapter.
When adding a RAID adapter and supercap as a field upgrade, order the supercap installation kit list listed in the following table.
M.2 drives
The SR645 V3 supports one or two M.2 form-factor SATA or NVMe drives for use as an operating system boot solution or as additional storage.
The M.2 drives install into an M.2 module which is mounted horizontally in the server in front of the fans as shown in the Internal view of the server. In configurations with 2.5-inch front drive bays, the M.2 module is position between the drive bays and the fans. In configurations with 3.5-inch front drive bays, the M.2 module is mounted on top of the front drive bays.
The supported M.2 modules are listed in the following table. For field upgrades see the M.2 field upgrades section below.
The ThinkSystem M.2 SATA/x4 NVMe 2-Bay Adapter (4Y37A79663) optionally supports RAID with the addition of a separate RAID adapter is required. For CTO orders, ordering information is listed in the following table to derive the required RAID adapter.
Configuration notes:
- M.2 is not supported with all storage configurations - see Storage configurations for details.
- For ThinkSystem M.2 SATA/NVMe 2-Bay Enablement Kit (4Y37A09738):
- RAID is not supported
- The installation of at least one M.2 drive is required. In the configurator, at least one M.2 drive must be selected
- For ThinkSystem M.2 SATA/x4 NVMe 2-Bay Adapter (4Y37A79663):
- The support of RAID-1 with the M.2 drives requires an additional RAID adapter that is installed in PCIe slot 2:
- RAID support for M.2 SATA drives requires a RAID 5350-8i adapter (feature BT7N)
- RAID support for M.2 NVMe drives requires a RAID 540-8i adapter operating in Tri-Mode (feature BT7P)
- The RAID adapter used for M.2 drive support cannot be configured for use with other drive bays (not even with 7mm)
- M.2 without a RAID adapter + 7mm SATA are mutually exclusive: they are not supported together in the same configuration
- If RAID support is not required, the M.2 adapter connects to an onboard port. No additional adapter is required
- The M.2 adapter is not supported with the following storage configurations due to physical limitations:
- Configurations with 3.5-inch front drive bays
- Configurations with EDSFF drive bays
- The support of RAID-1 with the M.2 drives requires an additional RAID adapter that is installed in PCIe slot 2:
- For ThinkSystem M.2 NVMe 2-Bay RAID Adapter (4Y37A09750):
- RAID is implemented using an onboard Marvell 88NR2241 NVMe RAID controller
- For ThinkSystem M.2 RAID B540i-2i SATA/NVMe Adapter (4Y37A90063):
- RAID is implemented using an onboard Broadcom controller
- M.2 and 7mm are supported together in certain combinations. See the 7mm and M.2 supported combinations section
The ThinkSystem M.2 SATA/NVMe 2-Bay Enablement Kit has the following features:
- Supports one or two M.2 drives, either SATA or NVMe
- When two drives installed, they must be either both SATA or both NVMe
- Support 42mm, 60mm, 80mm and 110mm drive form factors (2242, 2260, 2280 and 22110)
- On the SR645 V3, no RAID support
- Either 6Gbps SATA or PCIe 3.0 x1 interface to the drives depending on the drives installed
- Supports monitoring and reporting of events and temperature through I2C
- Firmware update via Lenovo firmware update tools
- When connected to a separate PCIe RAID adapter, supports SED drive encryption via the RAID adapter, otherwise no SED support
The ThinkSystem M.2 SATA/x4 NVMe 2-Bay Adapter has the following features:
- Supports one or two M.2 drives, either SATA or NVMe
- When two drives installed, they must be either both SATA or both NVMe
- Support 42mm, 60mm, 80mm and 110mm drive form factors (2242, 2260, 2280 and 22110)
- No onboard RAID; RAID functionality is provided by a separate adapter (SATA or NVMe)
- Either 6Gbps SATA or PCIe 4.0 x4 interface to the drives depending on the drives installed
- Supports monitoring and reporting of events and temperature through I2C
- Firmware update via Lenovo firmware update tools
- When connected to a separate PCIe RAID adapter, supports SED drive encryption via the RAID adapter, otherwise no SED support
The ThinkSystem M.2 NVMe 2-Bay RAID Adapter (4Y37A09750) has the following features:
- Supports one or two NVMe M.2 drives
- Support 42mm, 60mm, 80mm and 110mm drive form factors (2242, 2260, 2280 and 22110)
- RAID support via an onboard Marvell 88NR2241 NVMe RAID Controller
- With 1 drive, supports single-drive RAID-0
- With 2 drives, supports 2-drive RAID-0, 2-drive RAID-1, or two single-drive RAID-0 arrays
- PCIe 3.0 x2 host interface; PCIe 3.0 x1 connection to each drive
- Management and configuration support via UEFI and OS-based tools
- Supports monitoring and reporting of events and temperature through I2C
- Firmware update via Lenovo firmware update tools
- No support for SED drive encryption
The ThinkSystem M.2 RAID B540i-2i SATA/NVMe Adapter (4Y37A90063) has the following features:
- Supports one or two M.2 drives, either SATA or NVMe
- Support 42mm, 60mm, 80mm and 110mm drive form factors (2242, 2260, 2280 and 22110)
- RAID support via an onboard Broadcom SAS3808N RAID Controller
- With 1 drive, supports JBOD
- With 2 drives, supports 2-drive RAID-0, 2-drive RAID-1, or JBOD
- PCIe 4.0 x2 host interface; PCIe 4.0 x1 connection to each drive
- Management and configuration support via UEFI and OS-based tools
- Supports monitoring and reporting of events and temperature
- Firmware update via Lenovo firmware update tools
- Supports SED drive encryption
M.2 field upgrades
For field upgrades, the SR645 V3 also requires additional cables necessary to connect the M.2 to either the system board or RAID adapter.
Ordering information is listed in the following table. Note that the cable kit contains the necessary cables for all supported M.2 adapters, including the cables needed to connect to a supported RAID adapter (540-8i or 5350-8i).
SED encryption key management with SKLM
The server supports self-encrypting drives (SEDs) as listed in the Internal drive options section. To effectively manage a large deployment of these drives in Lenovo servers, IBM Security Key Lifecycle Manager (SKLM) offers a centralized key management solution.
A Lenovo Feature on Demand (FoD) upgrade is used to enable this SKLM support in the management processor of the server. The following table lists the part numbers and feature codes for the upgrades.
The IBM Security Key Lifecycle Manager software is available from Lenovo using the ordering information listed in the following table.
Controllers for internal storage
The SR645 V3 offers a variety of controller options for internal drives:
- For 2.5-inch and 3.5-inch drives:
- Onboard SATA ports (feature AVUX)
- Onboard NVMe ports (feature BC4V)
- PCIe Retimer adapter for NVMe drives (PCIe slot-based)
- RAID adapters and HBAs for SAS/SATA drives (PCIe slot-based)
- RAID adapters and HBAs for SAS/SATA drives (cabled in a dedicated space)
- For 7mm drive bays in the rear of the server (see the 7mm drives section)
- SATA controller integrated into the 7mm drive bay enclosure
- NVMe controller integrated into the 7mm drive bay enclosure
- For M.2 drives internal to the server (see M.2 drives section)
- SATA controller integrated on the M.2 adapters
- NVMe controller integrated on the M.2 adapters
As well as supporting RAID adapters and HBAs that install in a PCIe slot, the SR645 V3 with 2.5-inch front drive bays supports a custom form factor (CFF) adapter that is mounted in the server and cabled to one of the onboard NVMe ports. CFF adapters are not supported with 3.5-inch front drives due to a lack of physical space.
The following table lists the adapters used for the internal storage of the server.
* Only supported with 2.5-inch front drive bays. Not supported in configurations with 3.5-inch front drive bays.
† Adapter also supports PCIe 4.0 x1 connectivity to NVMe drives (requires NVMe drives with U.3 interface)
** This adapter is currently not available for CTO orders; it is only available as an option part number for field upgrades
Configuration notes:
- Supercap support limits the number of RAID adapters installable: The table lists whether the adapter includes a power module (supercap) to power the flash memory. The server supports only 1 supercap, the location of which depends on the server configuration as described in the RAID flash power module (supercap) support section. The number of supercaps supported determines the maximum number of RAID adapters with flash that can be installed in the server.
- Field upgrades: If you are adding a RAID adapter with supercap to the server as a field upgrade, you may need a supercap holder as described in the RAID flash power module (supercap) support section.
- 7mm drive support: The storage adapters listed in the table below do not provide connectivity to the 7mm drive bays that are optionally available at the rear of the server. The 7mm drives have their own independent RAID controller. See the Rear 2.5-inch and 7mm drive bays section for details.
- E810 Ethernet and X350 RAID/HBAs: The use of both an Intel E810 network adapter and an X350 HBA/RAID adapter (9350, 5350 and 4350) is supported, however E810 firmware CVL4.3 or later is required. For details, see Support Tip HT513226.
The RAID 940-8i and RAID 940-16i adapters also support NVMe through a feature named Tri-Mode support (or Trimode support). This feature enables the use of NVMe U.3 drives at the same time as SAS and SATA drives. Tri-Mode requires an AnyBay backplane. Cabling of the controller to the backplanes is the same as with SAS/SATA drives, and the NVMe drives are connected via a PCIe x1 link to the controller.
NVMe drives connected using Tri-Mode support provide better performance than SAS or SATA drives: A SATA SSD has a data rate of 6Gbps, a SAS SSD has a data rate of 12Gbps, whereas an NVMe U.3 Gen 4 SSD with a PCIe x1 link will have a data rate of 16Gbps. NVMe drives typically also have lower latency and higher IOPS compared to SAS and SATA drives. Tri-Mode is supported with U.3 NVMe drives and requires an AnyBay backplane.
Tri-Mode requires U.3 drives: Only NVMe drives with a U.3 interface are supported. U.2 drives are not supported. See the Internal drive options section for the U.3 drives supported by the server.
The onboard SATA controller has the following features:
- Controller integrated into the AMD processor
- JBOD only; no RAID support
- Supports up to 12 SATA drives in the SR645 V3
- Supports HDDs and SSDs; can be mixed
For specifications about the RAID adapters and HBAs supported by the SR645 V3, see the ThinkSystem RAID Adapter and HBA Reference, available from:
https://lenovopress.lenovo.com/lp1288-thinksystem-raid-adapter-and-hba-reference#sr645-v3-support=SR645%2520V3
For more information about each of the adapters, see the product guides in the RAID adapters or HBA sections of the Lenovo Press web site:
https://lenovopress.com/servers/options/raid
https://lenovopress.com/servers/options/hba
Internal drive options
The following tables list the drive options for internal storage of the server.
2.5-inch hot-swap drives:
- 2.5-inch hot-swap 12 Gb SAS HDDs
- 2.5-inch hot-swap 24 Gb SAS SSDs
- 2.5-inch hot-swap 12 Gb SAS SSDs
- 2.5-inch hot-swap 6 Gb SATA SSDs
- 2.5-inch hot-swap PCIe 5.0 NVMe SSDs
- 2.5-inch hot-swap PCIe 4.0 NVMe SSDs
2.5-inch 7mm hot-swap drives:
EDSFF hot-swap drives:
3.5-inch hot-swap drives:
M.2 drives:
M.2 drive support: The use of M.2 drives requires an additional adapter as described in the M.2 drives subsection.
SED support: The tables include a column to indicate which drives support SED encryption. The encryption functionality can be disabled if needed. Note: Not all SED-enabled drives have "SED" in the description.
Internal backup units
The SR645 V3 does not supports any internal backup units, such as tape drives or RDX drives. External backup units are available as described in the External backup units section.
Optical drives
The server supports the external USB optical drive listed in the following table.
Part number | Feature code | Description |
---|---|---|
7XA7A05926 | AVV8 | ThinkSystem External USB DVD RW Optical Disk Drive |
The drive is based on the Lenovo Slim DVD Burner DB65 drive and supports the following formats: DVD-RAM, DVD-RW, DVD+RW, DVD+R, DVD-R, DVD-ROM, DVD-R DL, CD-RW, CD-R, CD-ROM.
I/O expansion
The SR645 V3 supports a total of up to 5x PCIe slots, 3x at the rear and 2x at the front, plus 1x OCP 3.0 SFF slot for networking. The OCP slot can be either at the front or at the rear (but not both). Slot availability is based on riser selection and drive bays configured. The use of slot 3 and the front slots require that both processors be installed.
Internal (CFF) RAID adapter/HBA: For configurations with 2.5-inch front drive bays, an internal RAID adapter or HBA (CFF, custom form factor) can be installed in a dedicated space and cabled to a PCIe 4.0 x8 connector, thereby freeing up a slot for other purposes.
Topics in this section:
Rear slots
The following figure shows the locations of the rear-accessible slots for each configuration selection. The OCP slot is located below the PCIe slots.
Figure 15. SR645 V3 rear slot configurations
The rear-accessible slots and riser cards are as follows:
- Riser 1: Slots 1 & 2 (connect to CPU 1)
- Slot 1: Low Profile, PCIe x16
- Slot 2: Low Profile or FHHL, PCIe x16 (only in configuration A, B, and E in the above figure)
- Riser 2: Slot 3 (connects to CPU 2)
- Slot 3: Low Profile or FHHL, PCIe x16 (only in configuration A and C)
The PCIe slots can be configured as PCIe 5.0 (Gen 5) or PCIe 4.0 (Gen 4) depending on your workload requirements, however slot 2 will always be PCIe 4.0.
The following table lists the ordering information for the rear PCIe slots in the SR645 V3. The Cfg column matches the slot configurations shown in the preceding figure. The table is divided up into configurations with Gen5 slots with Gen4, and configurations with only Gen4 slots. Ordering information is as follows:
- For CTO orders, order the feature codes listed for the configuration, both riser and cage feature codes (2 or 4 feature codes, depending on the configuration)
- For field upgrades, order the part numbers listed for the configuration (1 or 2 part numbers, depending on the configuration). The part numbers include both the risers and cages needed for that configuration.
No slots: It is also possible to build a configuration without any slots, in which case slot fillers will be derived in the configurator. Slots can be added later as field upgrades using option part numbers in the table below.
* See configuration notes regarding Riser BLK7 below.
Configuration rules:
- For best performance, install PCIe 5.0 adapters in PCIe 5.0 (Gen5) slots
- Riser BLK7 (option 4XH7A86136) is currently only supported in configurations with 5th Gen AMD EPYC processors. Support for 4th Gen processors is planned for 1Q/2025
Front slots
As an addition or alternative to the rear slots, the SR645 V3 supports slots at the front of the server.
The following figure shows the locations of the front-accessible slots.
Figure 16. SR645 V3 front slots
The front-accessible slots and riser cards are as follows:
- Slot 4: Low Profile, PCIe Gen4 or Gen5, x8 (connects to CPU 2)
- Slot 5: FHHL, PCIe Gen4 or Gen5, x8 or x16 (connects to CPU 2)
- Slot 6: OCP 3.0 slot (PCIe Gen4 x16) (connects to CPU 1)
Ordering information is listed in the following table.
Support for front slots is based on the riser selected as well as the front drive bays selected, as listed in the following table.
Configuration notes:
- Front slots are CTO only, not available as option part numbers for field upgrades
- The use of front slots requires base feature code BQ7M as described in the Base feature codes section
- Front slots can be used in conjunction with rear drive bays. See the table of configurations in the Overview - 2.5-inch front bays with front slots section for specifics.
- The front OCP slot is automatically derived by the configurator with riser 4 (slot 5)
- The front and rear OCP slots are mutually exclusive; when the front OCP slot is configured, the rear OCP slot is disconnected
- M.2 is not supported
- The use of the closed-loop liquid-cooled processor heatsink is not supported
- The use of the security bezel is not supported
Serial port
The SR645 V3 optionally supports a RS-232 serial port by adding a COM port bracket to either slot 2 or slot 3. Ordering information is shown in the following table.
No front slot support: The serial port is not supported in the front PCIe slots
Part number | Feature code | Description |
---|---|---|
4X97A82921 | BMNJ | ThinkSystem V2/V3 1U COM Port Upgrade Kit |
The bracket is shown in the following figure. The option part number includes both Low Profile and Full Height brackets.
Network adapters
The server has a dedicated OCP 3.0 SFF slot with PCIe 5.0 x16 host interface. See Figure 3 for the location of the OCP slot.
The following table lists the supported OCP adapters. One port can optionally be shared with the XCC management processor for Wake-on-LAN and NC-SI support. Only 1 OCP card can be installed in the server.
The following table lists additional supported network adapters that can be installed in the regular PCIe slots.
† In the SR645 V3, this adapter requires a full-height bracket and must be installed in a full-height slot. The use of a low-profile bracket and slot is not supported.
§ Not supported installed in slot 1 of the LP+FH riser cage (configuration B in the I/O expansion section)
For more information, including the transceivers and cables that each adapter supports, see the list of Lenovo Press Product Guides in the Networking adapters category:
https://lenovopress.com/servers/options/ethernet
Configuration rules:
- The following adapters are not supported installed into the LP+FH riser cage (configuration B in the I/O expansion section)
- ThinkSystem Broadcom 5719 1GbE RJ45 4-Port PCIe Ethernet Adapter, 7ZT7A00484
- ThinkSystem I350-T4 PCIe 1Gb 4-Port RJ45 Ethernet Adapter, 7ZT7A00535
- ThinkSystem Broadcom 57454 10GBASE-T 4-port PCIe Ethernet Adapter, 4XC7A08245
- E810 Ethernet and X350 RAID/HBAs: The use of both an Intel E810 network adapter and an X350 HBA/RAID adapter (9350, 5350 and 4350) is supported, however E810 firmware CVL4.3 or later is required. For details, see Support Tip HT513226.
Fibre Channel host bus adapters
The following table lists the Fibre Channel HBAs supported by the SR645 V3.
No Windows 10/11 support: None of the adapters listed in the table are supported with Windows 10 or Windows 11.
For more information, see the list of Lenovo Press Product Guides in the Host bus adapters category:
https://lenovopress.com/servers/options/hba
SAS adapters for external storage
The following table lists SAS HBAs and RAID adapters supported by SR645 V3 server for use with external storage.
No Windows 10/11 support: None of the adapters listed in the table are supported with Windows 10 or Windows 11.
* See configuration rules below regarding supercap requirements
For a comparison of the functions of the supported storage adapters, see the ThinkSystem RAID Adapter and HBA Reference:
https://lenovopress.lenovo.com/lp1288#sr645-v3-support=SR645%2520V3&internal-or-external-ports=External
Configuration rules
- The RAID 940-8e uses a flash power module (supercap), and the SR645 V3 supports only 1 supercap depending on the configuration. See the RAID flash power module (supercap) support section for details. If a RAID 9XXX adapter is configured for connectivity to internal drive bays, then no RAID 940-8e are supported.
https://lenovopress.com/servers/options/hba
https://lenovopress.com/servers/options/raid
GPU adapters
The SR645 V3 supports the following graphics processing units (GPUs).
* See NVIDIA L4 configuration rule below
For information about these GPUs, see the ThinkSystem GPU Summary, available at:
https://lenovopress.com/lp0768-thinksystem-thinkagile-gpu-summary
Configuration rules
The following configuration requirements must be met when installing GPUs:
- The table includes a Controlled GPU column. If a GPU is listed as Controlled, that means the GPU is not offered in certain markets, as determined by the US Government. If a GPU is listed as No, that means the GPU is not controlled and is available in all markets.
- GPUs can be configured in CTO orders as follows:
- A Controlled GPU can only be configured using one of the Base CTO models for Controlled GPUs, such as 7D9CCTOAWW, as listed in the Models section.
- A GPU that is not controlled can only be configured using one of the Base CTO models that is not for Controlled GPUs, such as 7D9CCTO1WW, as listed in the Models section.
- All GPUs installed must be identical
- Rear drive bays bays are not supported
- Flash storage adapters are not supported.
- Maximum ambient temperature is 30°C
- Performance fans are required and will be derived by the configurator for configure-to-order builds.
- When adding GPUs as field upgrades, you will be required to replace all Standard fans with Performance fans. See the Cooling section for ordering information.
- The use of NVIDIA L4 GPU requires the following riser cards (Rear slot Config C; see I/O Expansion section):
- Slot 1: ThinkSystem SR645 V3/SR635 V3 x16 PCIe Gen5 Riser1, BLK7 (4XH7A86136) (5th Gen AMD only**)
- Slot 3: ThinkSystem V3 1U x16 PCIe Gen5 Riser2, BLKA (4XH7A83843)
- Slot 5: ThinkSystem V3 1U 1X16 FHFL FR Front PCIe Gen5 Riser, C1PQ (CTO only) (5th Gen AMD only**)
** Risers BLK7 and C1PQ are currently only supported with 5th Gen AMD EPYC processors; 4th Gen processor support is planned for 1Q/2025
- For details regarding supported combinations of front drive bays, processors, fans, and ambient temperature, see the Thermal Rules page of the User Guide:
https://pubs.lenovo.com/sr645-v3/thermal_rules#server-models-with-gpus
Cooling
The SR645 V3 server has up to eight 40 mm dual-rotor hot-swap variable-speed fans. Six fans are needed when one processor is installed and eight fans are required when two processors are installed. The server offers N+1 rotor redundancy. The server also has one additional fan integrated in each of the two power supplies.
Depending on the configuration, the server will need either Standard fans (21K RPM) or Performance fans (28K RPM)
Under the following conditions, Standard fans can be used:
- Processor with TDP ≤ 240W
- No GPUs
- Front drive bays ≤ 8x SAS/SATA drives
- Rear drive bays SAS/SATA, 7mm or 2.5-inch
- No NVMe drives, front or rear
- No 256GB 3DS RDIMMs
- None of the following network adapters:
- Any 100Gb, 200Gb or 400Gb adapter
- ThinkSystem Broadcom 57454 10GBASE-T 4-port OCP Ethernet Adapter
If any conditions are not met, Performance fans are required.
Ordering information for the fans is listed in the following table.
Power supplies
The SR645 V3 supports up to two redundant hot-swap power supplies.
The power supply choices are listed in the following table. Both power supplies used in server must be identical.
Tip: When configuring a server in the DCSC configurator, power consumption is calculated precisely by interfacing with Lenovo Capacity Planner. You can therefore select the appropriate power supply for your configuration. However, do consider future upgrades that may require additional power needs.
Supported power supplies are auto-sensing dual-voltage units, supporting both 110V AC (100-127V 50/60 Hz) and 220V AC (200-240V 50/60 Hz) power. For China customers, all power supplies support 240V DC. All supported AC power supplies have a C14 connector.
The supported -48V DC power supply has a Weidmuller TOP 4GS/3 7.6 terminal as shown in the following figure.
Figure 18. Connector on the ThinkSystem 1100W -48V DC Hot-Swap Gen2 Power Supply
Power supply options do not include a line cord. For server configurations, the inclusion of a power cord is model dependent. Configure-to-order models can be configured without power cords if desired.
Power supply LEDs
The supported hot-swap power supplies have the following LEDs:
- Power input LED:
- Green: The power supply is connected to the AC power source
- Off: The power supply is disconnected from the AC power source or a power problem has occurred
- Power output LED:
- Green: The server is on and the power supply is working normally
- Blinking green: The power supply is in Zero-output/Standby mode (see below)
- Off: The server is powered off, or the power supply is not working properly
- Power supply error LED:
- Off: The power supply is working normally
- Yellow: The power supply has failed
Zero-output mode: When Zero-output mode (also known as Standby mode or Cold Redundancy mode) is configured in XCC and the server power load is sufficiently low, one of the installed power supplies enters into the Standby state while the other one delivers entire load. When the power load increases, the standby power supply will switch to Active state to provide sufficient power to the server. Zero-output mode can be enabled or disabled in the XClarity Controller web interface, Server Configuration > Power Policy. If you select Disable, then both power supplies will be in the Active state.
Power cords
Line cords and rack power cables with C13 connectors can be ordered as listed in the following table.
110V customers: If you plan to use the 1100W power supply with a 110V power source, select a power cable that is rated above 10A. Power cables that are rated at 10A or below are not supported with 110V power.
Systems management
The SR645 V3 contains an integrated service processor, XClarity Controller 2 (XCC), which provides advanced control, monitoring, and alerting functions. The XCC2 is based on the AST2600 baseboard management controller (BMC) using a dual-core ARM Cortex A7 32-bit RISC service processor running at 1.2 GHz.
Topics in this section:
System I/O Board
The SR645 V3 implements a separate System I/O Board that connects to the Processor Board. The location of the System I/O Board is shown in the Components and connectors section. The System I/O Board contains all the connectors visible at the rear of the server as shown in the following figure.
The board also has the following components:
- XClarity Controller 2, implemented using the ASPEED AST2600 baseboard management controller (BMC).
- Root of Trust (RoT) module - a daughter card that implements Platform Firmware Resiliency (PFR) hardware Root of Trust (RoT) which enables the server to be NIST SP800-193 compliant. For more details about PFR, see the Security section.
- Connector to enable an additional redundant Ethernet connection to the XCC2 controller. The connector is used in conjunction with the ThinkSystem V3 Management NIC Adapter Kit (4XC7A85319). For details, see the Remote management section.
- Internal USB port - to allow the booting of an operating system from a USB key. The VMware ESXi preloads use this port for example. Preloads are described in the Operating system support section.
- MicroSD card port to enable the use of a MicroSD card for additional storage for use with the XCC2 controller. XCC2 can use the storage as a Remote Disc on Card (RDOC) device (up to 4GB of storage). It can also be used to store firmware updates (including N-1 firmware history) for ease of deployment.
Tip: Without a MicroSD card installed, the XCC2 controller will have 100MB of available RDOC storage.
Ordering information for the supported USB drive and Micro SD card are listed in the following table.
Local management
The SR645 V3 offers a front operator panel with key LED status indicators, as shown in the following figure.
Tip: The Network LED only shows network activity of the installed OCP network adapter.
Figure 20. Front operator panel
Light path diagnostics
The server offers light path diagnostics. If an environmental condition exceeds a threshold or if a system component fails, the XCC lights LEDs inside the server to help you diagnose the problem and find the failing part. The server has fault LEDs next to the following components:
- Each memory DIMM
- Each drive bay
- Each power supply
Integrated Diagnostics Panel for 8x 2.5-inch and EDSFF configurations
For configurations with 8x 2.5-inch drive bays or 16x EDSFF drive bays at the front, the server can optionally be configured to have a pull-out Integrated Diagnostics Panel. The following figure shows the configurations with the standard (fixed) operator panel and the optional Integrated Diagnostics Panel.
Figure 21. Operator panel choices for the EDSFF and 8x 2.5-inch drive bay configurations
The Integrated Diagnostics Panel allows quick access to system status, firmware, network, and health information. The LCD display on the panel and the function buttons give you access to the following information:
- Active alerts
- Status Dashboard
- System VPD: machine type & mode, serial number, UUID string
- System firmware levels: UEFI and XCC firmware
- XCC network information: hostname, MAC address, IP address, DNS addresses
- Environmental data: Ambient temperature, CPU temperature, AC input voltage, estimated power consumption
- Active XCC sessions
- System reset action
The Integrated Diagnostics Panel can be configured as listed in the following table. It is only available configure-to-order (CTO); not available as a field upgrade.
Configuration rules for the Pull-out operator panel:
- Only supported with configurations with 8x 2.5-inch drive bays or with EDSFF drive bays
- Not available as a field upgrade. The component is CTO or on pre-configured models only
Front VGA and External Diagnostics ports
The VGA port at the rear of the server is included in all models, however the VGA port at the front of the server is optional. The ThinkSystem V2/V3 1U Front VGA Cable Option Kit allows you to upgrade your server by adding a VGA video port to the front of the server (if the server does not already come with a front VGA port). When the front VGA is in use, the rear VGA port is automatically disabled.
The SR645 V3 optionally includes a port to connect an External Diagnostics Handset. To include in a server, ensure the appropriate feature code is included, based on the front drive configuration. Field upgrades to add the External Diagnostics port are not available.
External Diagnostics Handset
The SR645 V3 optionally includes a port to connect an External Diagnostics Handset as described in the previous section. The External Diagnostics Handset has the same functions as the Integrated Diagnostics Panel but has the advantages of not consuming space on the front of the server plus it can be shared among many servers in your data center. The handset has a magnet on the back of it to allow you to easily mount it on a convenient place on any rack cabinet.
Figure 22. External Diagnostics Handset
The following table lists the ordering information for the handset.
Part number | Feature code | Description |
---|---|---|
4TA7A64874 | BEUX | ThinkSystem External Diagnostics Handset |
Information pull-out tab
The front of the server also houses an information pull-out tab (also known as the network access tag). See Figure 2 for the location. A label on the tab shows the network information (MAC address and other data) to remotely access the service processor.
System status with XClarity Mobile
The XClarity Mobile app includes a tethering function where you can connect your Android or iOS device to the server via USB to see the status of the server.
The steps to connect the mobile device are as follows:
- Enable USB Management on the server, by holding down the ID button for 3 seconds (or pressing the dedicated USB management button if one is present)
- Connect the mobile device via a USB cable to the server's USB port with the management symbol
- In iOS or Android settings, enable Personal Hotspot or USB Tethering
- Launch the Lenovo XClarity Mobile app
Once connected you can see the following information:
- Server status including error logs (read only, no login required)
- Server management functions (XClarity login credentials required)
Remote management
The server offers a dedicated RJ45 Ethernet port at the rear of the server for remote management via the XClarity Controller 2 management processor. The port supports 10/100/1000 Mbps speeds.
Remote server management is provided through industry-standard interfaces:
- Intelligent Platform Management Interface (IPMI) Version 2.0
- Simple Network Management Protocol (SNMP) Version 3 (no SET commands; no SNMP v1)
- Common Information Model (CIM-XML)
- Representational State Transfer (REST) support
- Redfish support (DMTF compliant)
- Web browser - HTML 5-based browser interface (Java and ActiveX not required) using a responsive design (content optimized for device being used - laptop, tablet, phone) with NLS support
The SR645 V3 also supports the use of an OCP adapter that provides an additional redundant Ethernet connection to the XCC2 controller. Ordering information is listed in the following table.
Part number |
Feature code |
Description | Maximum quantity |
---|---|---|---|
4XC7A85319 | BTMQ | ThinkSystem V3 Management NIC Adapter Kit | 1 |
The use of this adapter allows concurrent remote access using both the connection on the adapter and the onboard RJ45 remote management port provided by the server. The adapter and onboard port have separate IP addresses.
Configuration rules:
- The Redundant System Management Port Adapter is installed in the OCP adapter slot at the rear of the server and is mutually exclusive with any OCP network adapter.
- It is not supported installed in the front OCP slot (if the front OCP slot is configured)
- If the Redundant System Management Port Adapter is installed in the rear slot, then the front OCP slot (if configured) cannot be used.
The following figure shows the server with the Redundant System Management Port Adapter installed in the OCP slot.
Figure 23. SR645 V3 with the Redundant System Management Port Adapter installed
IPMI via the Ethernet port (IPMI over LAN) is supported, however it is disabled by default. For CTO orders you can specify whether you want to the feature enabled or disabled in the factory, using the feature codes listed in the following table.
XCC2 Platinum
The XCC2 service processor in the SR645 V3 supports an upgrade to the Platinum level of features. Compared to the XCC functions of ThinkSystem V2 and earlier systems, Platinum adds the same features as Enterprise and Advanced levels in ThinkSystem V2, plus additional features.
XCC2 Platinum adds the following Enterprise and Advanced functions:
- Remotely viewing video with graphics resolutions up to 1600x1200 at 75 Hz with up to 23 bits per pixel, regardless of the system state
- Remotely accessing the server using the keyboard and mouse from a remote client
- International keyboard mapping support
- Syslog alerting
- Redirecting serial console via SSH
- Component replacement log (Maintenance History log)
- Access restriction (IP address blocking)
- Lenovo SED security key management
- Displaying graphics for real-time and historical power usage data and temperature
- Boot video capture and crash video capture
- Virtual console collaboration - Ability for up to 6 remote users to be log into the remote session simultaneously
- Remote console Java client
- Mapping the ISO and image files located on the local client as virtual drives for use by the server
- Mounting the remote ISO and image files via HTTPS, SFTP, CIFS, and NFS
- System utilization data and graphic view
- Single sign on with Lenovo XClarity Administrator
- Update firmware from a repository
- License for XClarity Energy Manager
Note: The SR645 V3 does not support Power capping.
XCC2 Platinum also adds the following features that are new to XCC2:
- System Guard - Monitor hardware inventory for unexpected component changes, and simply log the event or prevent booting
- Enterprise Strict Security mode - Enforces CNSA 1.0 level security
- Neighbor Group - Enables administrators to manage and synchronize configurations and firmware level across multiple servers
Ordering information is listed in the following table. XCC2 Platinum is a software license upgrade - no additional hardware is required.
Part number | Feature code | Description |
---|---|---|
7S0X000DWW | S91X | Lenovo XClarity XCC2 Platinum Upgrade |
7S0X000KWW | SBCV | Lenovo XClarity Controller 2 (XCC2) Platinum Upgrade |
With XCC2 Platinum, for CTO orders, you can request that System Guard be enabled in the factory and the first configuration snapshot be recorded. To add this to an order, select feature code listed in the following table. The selection is made in the Security tab of the DCSC configurator.
Feature code | Description |
---|---|
BUT2 | Install System Guard |
For more information about System Guard, see https://pubs.lenovo.com/xcc2/NN1ia_c_systemguard
Lenovo XClarity Provisioning Manager
Lenovo XClarity Provisioning Manager (LXPM) is a UEFI-based application embedded in ThinkSystem servers and accessible via the F1 key during system boot.
LXPM provides the following functions:
- Graphical UEFI Setup
- System inventory information and VPD update
- System firmware updates (UEFI and XCC)
- RAID setup wizard
- OS installation wizard (including unattended OS installation)
- Diagnostics functions
Lenovo XClarity Administrator
Lenovo XClarity Administrator is a centralized resource management solution designed to reduce complexity, speed response, and enhance the availability of Lenovo systems and solutions. It provides agent-free hardware management for ThinkSystem servers, in addition to ThinkServer, System x, and Flex System servers. The administration dashboard is based on HTML 5 and allows fast location of resources so tasks can be run quickly.
Because Lenovo XClarity Administrator does not require any agent software to be installed on the managed endpoints, there are no CPU cycles spent on agent execution, and no memory is used, which means that up to 1GB of RAM and 1 - 2% CPU usage is saved, compared to a typical managed system where an agent is required.
Lenovo XClarity Administrator is an optional software component for the SR645 V3. The software can be downloaded and used at no charge to discover and monitor the SR645 V3 and to manage firmware upgrades.
If software support is required for Lenovo XClarity Administrator, or premium features such as configuration management and operating system deployment are required, Lenovo XClarity Pro software subscription should be ordered. Lenovo XClarity Pro is licensed on a per managed system basis, that is, each managed Lenovo system requires a license.
The following table lists the Lenovo XClarity software license options.
Lenovo XClarity Administrator offers the following standard features that are available at no charge:
- Auto-discovery and monitoring of Lenovo systems
- Firmware updates and compliance enforcement
- External alerts and notifications via SNMP traps, syslog remote logging, and e-mail
- Secure connections to managed endpoints
- NIST 800-131A or FIPS 140-2 compliant cryptographic standards between the management solution and managed endpoints
- Integration into existing higher-level management systems such as cloud automation and orchestration tools through REST APIs, providing extensive external visibility and control over hardware resources
- An intuitive, easy-to-use GUI
- Scripting with Windows PowerShell, providing command-line visibility and control over hardware resources
Lenovo XClarity Administrator offers the following premium features that require an optional Pro license:
- Pattern-based configuration management that allows to define configurations once and apply repeatedly without errors when deploying new servers or redeploying existing servers without disrupting the fabric
- Bare-metal deployment of operating systems and hypervisors to streamline infrastructure provisioning
For more information, refer to the Lenovo XClarity Administrator Product Guide:
http://lenovopress.com/tips1200
Lenovo XClarity Integrators
Lenovo also offers software plug-in modules, Lenovo XClarity Integrators, to manage physical infrastructure from leading external virtualization management software tools including those from Microsoft and VMware.
These integrators are offered at no charge, however if software support is required, a Lenovo XClarity Pro software subscription license should be ordered.
Lenovo XClarity Integrators offer the following additional features:
- Ability to discover, manage, and monitor Lenovo server hardware from VMware vCenter or Microsoft System Center
- Deployment of firmware updates and configuration patterns to Lenovo x86 rack servers and Flex System from the virtualization management tool
- Non-disruptive server maintenance in clustered environments that reduces workload downtime by dynamically migrating workloads from affected hosts during rolling server updates or reboots
- Greater service level uptime and assurance in clustered environments during unplanned hardware events by dynamically triggering workload migration from impacted hosts when impending hardware failures are predicted
For more information about all the available Lenovo XClarity Integrators, see the Lenovo XClarity Administrator Product Guide: https://lenovopress.com/tips1200-lenovo-xclarity-administrator
Lenovo XClarity Essentials
Lenovo offers the following XClarity Essentials software tools that can help you set up, use, and maintain the server at no additional cost:
- Lenovo Essentials OneCLI
OneCLI is a collection of server management tools that uses a command line interface program to manage firmware, hardware, and operating systems. It provides functions to collect full system health information (including health status), configure system settings, and update system firmware and drivers.
- Lenovo Essentials UpdateXpress
The UpdateXpress tool is a standalone GUI application for firmware and device driver updates that enables you to maintain your server firmware and device drivers up-to-date and help you avoid unnecessary server outages. The tool acquires and deploys individual updates and UpdateXpress System Packs (UXSPs) which are integration-tested bundles.
- Lenovo Essentials Bootable Media Creator
The Bootable Media Creator (BOMC) tool is used to create bootable media for offline firmware update.
For more information and downloads, visit the Lenovo XClarity Essentials web page:
http://support.lenovo.com/us/en/documents/LNVO-center
Lenovo XClarity Energy Manager
Lenovo XClarity Energy Manager (LXEM) is a power and temperature management solution for data centers. It is an agent-free, web-based console that enables you to monitor and manage power consumption and temperature in your data center through the management console.
LXEM is a licensed product. A single-node LXEM license is included with the XClarity Controller Platinum upgrade as described in the XCC2 Platinum section. If your server does not have the XCC Platinum upgrade, Energy Manager licenses can be ordered as shown in the following table.
Part number | Description |
---|---|
4L40E51621 | Lenovo XClarity Energy Manager Node License (1 license needed per server) |
Note: The SR645 V3 does not support the following Energy Manager functions:
- Power capping
- Policy-based management
For more information about XClarity Energy Manager, see the following resources:
- Lenovo Support page:
https://datacentersupport.lenovo.com/us/en/solutions/lnvo-lxem - User Guide for XClarity Energy Manager:
https://pubs.lenovo.com/lxem/
Lenovo Capacity Planner
Lenovo Capacity Planner is a power consumption evaluation tool that enhances data center planning by enabling IT administrators and pre-sales professionals to understand various power characteristics of racks, servers, and other devices. Capacity Planner can dynamically calculate the power consumption, current, British Thermal Unit (BTU), and volt-ampere (VA) rating at the rack level, improving the planning efficiency for large scale deployments.
For more information, refer to the Capacity Planner web page:
http://datacentersupport.lenovo.com/us/en/solutions/lnvo-lcp
Security
Topics in this section:
Security features
The SR645 V3 server offers the following electronic security features:
- Secure Boot function of the AMD EPYC processor
- Support for Platform Firmware Resiliency (PFR) hardware Root of Trust (RoT) - see the Platform Firmware Resiliency section
- Firmware signature processes compliant with FIPS and NIST requirements
- System Guard (part of XCC Platinum) - Proactive monitoring of hardware inventory for unexpected component changes
- Administrator and power-on password
- Integrated Trusted Platform Module (TPM) supporting TPM 2.0
- Self-encrypting drives (SEDs) with support for enterprise key managers - see the SED encryption key management section
The server is NIST SP 800-147B compliant.
The SR645 V3 server also offers the following optional physical security features:
- Optional chassis intrusion switch
- Optional lockable front security bezel
The optional lockable front security bezel is shown in the following figure and includes a key that enables you to secure the bezel over the drives and system controls thereby reducing the chance of unauthorized or accidental access to the server.
Front PCIe slots: The use of the security bezel is not supported when the server has front PCIe slots.
Figure 24. Lockable front security bezel
The dimensions of the security bezel are:
- Width: 437 mm (17.2 in.)
- Height: 43 mm (1.3 in.)
- Width: 23 mm (0.9 in.)
The following table lists the physical security options for the SR645 V3.
Tip: The only difference between security bezels 4XH7A09890 and 4XH7A90346 is the Lenovo logo: On 4XH7A09890, the logo is made from plastic; on 4XH7A90346, the logo is made from aluminum alloy.
Platform Firmware Resiliency - Lenovo ThinkShield
Lenovo's ThinkShield Security is a transparent and comprehensive approach to security that extends to all dimensions of our data center products: from development, to supply chain, and through the entire product lifecycle.
The ThinkSystem SR645 V3 includes Platform Firmware Resiliency (PFR) hardware Root of Trust (RoT) which enables the system to be NIST SP800-193 compliant. This offering further enhances key platform subsystem protections against unauthorized firmware updates and corruption, to restore firmware to an integral state, and to closely monitor firmware for possible compromise from cyber-attacks.
PFR operates upon the following server components:
- UEFI image – the low-level server firmware that connects the operating system to the server hardware
- XCC image – the management “engine” software that controls and reports on the server status separate from the server operating system
- FPGA image – the code that runs the server’s lowest level hardware controller on the motherboard
The Lenovo Platform Root of Trust Hardware performs the following three main functions:
- Detection – Measures the firmware and updates for authenticity
- Recovery – Recovers a corrupted image to a known-safe image
- Protection – Monitors the system to ensure the known-good firmware is not maliciously written
These enhanced protection capabilities are implemented using a dedicated, discrete security processor whose implementation has been rigorously validated by leading third-party security firms. Security evaluation results and design details are available for customer review – providing unprecedented transparency and assurance.
The SR645 V3 includes support for Secure Boot, a UEFI firmware security feature developed by the UEFI Consortium that ensures only immutable and signed software are loaded during the boot time. The use of Secure Boot helps prevent malicious code from being loaded and helps prevent attacks, such as the installation of rootkits. Lenovo offers the capability to enable secure boot in the factory, to ensure end-to-end protection. Alternatively, Secure Boot can be left disabled in the factory, allowing the customer to enable it themselves at a later point, if desired.
The following table lists the relevant feature code(s).
Tip: If Secure Boot is not enabled in the factory, it can be enabled later by the customer. However once Secure Boot is enabled, it cannot be disabled.
Security standards
The SR645 V3 supports the following security standards and capabilities:
- Industry Standard Security Capabilities
- AMD CPU Enablement
- AES-NI (Advanced Encryption Standard New Instructions)
- GMET (Guest Mode Execute Trap)
- Hardware-based side channel attack resilience enhancements
- NX (No eXecute)
- PSB (Platform Secure Boot)
- Shadow Stack
- SEV (Secure Encrypted Virtualization)
- SEV-ES (Encrypted State register encryption)
- SEV-SNP (Secure Nested Paging)
- SVM (Secure Virtual Machine)
- SME (Secure Memory Encryption)
- UMIP (User Mode Instruction Prevention)
- Microsoft Windows Security Enablement
- Credential Guard
- Device Guard
- Host Guardian Service
- TCG (Trusted Computing Group) TPM (Trusted Platform Module) 2.0
- UEFI (Unified Extensible Firmware Interface) Forum Secure Boot
- AMD CPU Enablement
- Hardware Root of Trust and Security
- Independent security subsystem providing platform-wide NIST SP800-193 compliant Platform Firmware Resilience (PFR)
- Host domain RoT supplemented by AMD Platform Secure Boot (PSB)
- Management domain RoT supplemented by the Secure Boot features of XCC
- Platform Security
- Boot and run-time firmware integrity monitoring with rollback to known-good firmware (e.g., “self-healing”)
- Non-volatile storage bus security monitoring and filtering
- Resilient firmware implementation, such as to detect and defeat unauthorized flash writes or SMM (System Management Mode) memory incursions
- Patented IPMI KCS channel privileged access authorization (USPTO Patent# 11,256,810)
- Host and management domain authorization, including integration with CyberArk for enterprise password management
- KMIP (Key Management Interoperability Protocol) compliant, including support for IBM SKLM and Thales KeySecure
- Reduced “out of box” attack surface
- Configurable network services
- FIPS 140-3 (in progress) validated cryptography for XCC
- CNSA Suite 1.0 Quantum-resistant cryptography for XCC
- Lenovo System Guard
For more information on platform security, see the paper “How to Harden the Security of your ThinkSystem Server and Management Applications” available from https://lenovopress.com/lp1260-how-to-harden-the-security-of-your-thinksystem-server.
- Standards Compliance and/or Support
- NIST SP800-131A rev 2 “Transitioning the Use of Cryptographic Algorithms and Key Lengths”
- NIST SP800-147B “BIOS Protection Guidelines for Servers”
- NIST SP800-193 “Platform Firmware Resiliency Guidelines”
- ISO/IEC 11889 “Trusted Platform Module Library”
- Common Criteria TCG Protection Profile for “PC Client Specific TPM 2.0”
- European Union Commission Regulation 2019/424 (“ErP Lot 9”) “Ecodesign Requirements for Servers and Data Storage Products” Secure Data Deletion
- Optional FIPS 140-2 validated Self-Encrypting Disks (SEDs) with external KMIP-based key management
- Product and Supply Chain Security
- Suppliers validated through Lenovo’s Trusted Supplier Program
- Developed in accordance with Lenovo’s Secure Development Lifecycle (LSDL)
- Continuous firmware security validation through automated testing, including static code analysis, dynamic network and web vulnerability testing, software composition analysis, and subsystem-specific testing, such as UEFI security configuration validation
- Ongoing security reviews by US-based security experts, with attestation letters available from our third-party security partners
- Digitally signed firmware, stored and built on US-based infrastructure and signed on US-based Hardware Security Modules (HSMs)
- TAA (Trade Agreements Act) compliant manufacturing, by default in Mexico for North American markets with additional US and EU manufacturing options
- US 2019 NDAA (National Defense Authorization Act) Section 889 compliant
Rack installation
The following table lists the rack installation options that are available for the SR645 V3.
For the specification of the rail kits, see the ThinkSystem and ThinkEdge Rail Kit Reference:
https://lenovopress.lenovo.com/lp1838-thinksystem-and-thinkedge-rail-kit-reference#sr645-v3-support=SR645%2520V3
Operating system support
The SR645 V3 with 5th Gen AMD EPYC processors supports the following operating systems:
- Microsoft Windows Server 2019
- Microsoft Windows Server 2022
- Microsoft Windows Server 2025
- Red Hat Enterprise Linux 8.10
- Red Hat Enterprise Linux 9.4
- SUSE Linux Enterprise Server 15 SP6
- Ubuntu 24.04 LTS 64-bit
- VMware ESXi 8.0 U3
- Windows 10 (x64)
- Windows 11
The SR645 V3 with 4th Gen AMD EPYC processors supports the following operating systems:
- Microsoft Windows Server 2019
- Microsoft Windows Server 2022
- Microsoft Windows Server 2025
- Red Hat Enterprise Linux 8.6
- Red Hat Enterprise Linux 8.7
- Red Hat Enterprise Linux 8.8
- Red Hat Enterprise Linux 8.9
- Red Hat Enterprise Linux 8.10
- Red Hat Enterprise Linux 9.0
- Red Hat Enterprise Linux 9.1
- Red Hat Enterprise Linux 9.2
- Red Hat Enterprise Linux 9.3
- Red Hat Enterprise Linux 9.4
- SUSE Linux Enterprise Server 15 SP4
- SUSE Linux Enterprise Server 15 SP5
- SUSE Linux Enterprise Server 15 SP6
- SUSE Linux Enterprise Server 15 Xen SP4
- SUSE Linux Enterprise Server 15 Xen SP5
- Ubuntu 20.04 LTS 64-bit
- Ubuntu 22.04 LTS 64-bit
- Ubuntu 24.04 LTS 64-bit
- VMware ESXi 7.0 U3
- VMware ESXi 8.0
- VMware ESXi 8.0 U1
- VMware ESXi 8.0 U2
- VMware ESXi 8.0 U3
- Windows 10 (x64)
- Windows 11
For a complete list of supported, certified and tested operating systems, plus additional details and links to relevant web sites, see the Operating System Interoperability Guide:
For configure-to-order configurations, the SR645 V3 can be preloaded with VMware ESXi. Ordering information is listed in the following table.
Configuration rule:
- An ESXi preload cannot be selected if the configuration includes an NVIDIA GPU (ESXi preload cannot include the NVIDIA driver)
You can download supported VMware vSphere hypervisor images from the following web page and install it using the instructions provided:
https://vmware.lenovo.com/content/custom_iso/
Windows 10 and Windows 11
The SR645 V3 can now run Windows 10 and Windows 11, however only a subset of adapters and drives can be installed. For ease of configuration, additional Base CTO models 7D9CCTO2WW and 7D9DCTO2WW have been created to assist building a configuration that can be used with the client operating systems. See the Models section for details.
The XClarity management toolset is supported with Windows 10 and Windows 11.
Windows client license: A Windows client license for the system cannot be ordered from Lenovo nor can the OS be preloaded on the system in the factory. For the Windows license and for preloads, please contact your Lenovo business partner. A Windows Pro license is required as a qualifying base OS license in order to use a client Volume License offering.
See the part number tables in the following sections to see which adapters are supported with Windows 10 and Windows 11:
GPU recommended: Lenovo recommends that if you plan to install Windows 10 or 11 on this server to run graphics-intensive applications, then you should selected a dedicated graphics adapter (GPU).
The following components are not supported:
- Fibre Channel adapters
- InfiniBand and VPI adapters
- External storage adapters
- Flash storage adapters
Physical and electrical specifications
The SR645 V3 has the following overall physical dimensions, excluding components that extend outside the standard chassis, such as EIA flanges, front security bezel (if any), and power supply handles:
- Width: 440 mm (17.3 inches)
- Height: 43 mm (1.7 inches)
- Depth: 773 mm (30.4 inches)
The following table lists the detailed dimensions. See the figure below for the definition of each dimension.
The shipping (cardboard packaging) dimensions of the SR645 V3 are as follows:
- Width: 587 mm (23.1 inches)
- Height: 225 mm (8.9 inches)
- Depth: 998 mm (39.3 inches)
The server has the following weight:
- Maximum weight: 20.2 kg (44.6 lb)
The server has the following electrical specifications for AC input power supplies:
- Input voltage:
- 100 to 127 (nominal) Vac, 50 Hz or 60 Hz
- 200 to 240 (nominal) Vac, 50 Hz or 60 Hz
- 180 to 300 Vdc (China only)
- Inlet current: see the following table.
Electrical specifications for DC input power supply:
- Input voltage: -48 to -60 Vdc
- Inlet current (1100W power supply): 26 A