Author
Updated
5 Jun 2023Form Number
LP1257PDF size
9 pages, 208 KB* Only available in selected markets
Abstract
The PM1643a Entry SAS 12Gb solid-state drives (SSDs) from Lenovo provide high-performance, reliable storage solutions for high-capacity enterprise applications. Designed for dense storage and with a 12 Gb SAS interface, these drives feature all the capacity and performance that is needed to replace large numbers of 15K rpm and 10K rpm spinning disks, and consolidate storage into tightly packed server configurations.
This product guide provides essential presales information to understand the PM1643a Entry SAS 12Gb SSD offerings and their key features, specifications, and compatibility. This guide is intended for technical specialists, sales specialists, sales engineers, IT architects, and other IT professionals who want to learn more about the SSDs and consider their use in IT solutions.
Change History
Changes in the June 5, 2023 update:
- The following 2.5-inch drives are now withdrawn from marketing:
- ThinkSystem 2.5" PM1643a 1.92TB Entry SAS 12Gb Hot Swap SSD, 4XB7A38176
- ThinkSystem 2.5" PM1643a 3.84TB Entry SAS 12Gb Hot Swap SSD, 4XB7A17054
- ThinkSystem 2.5" PM1643a 7.68TB Entry SAS 12Gb Hot Swap SSD, 4XB7A17055
- The following 3.5-inch drives are now withdrawn from marketing:
- ThinkSystem 3.5" PM1643a 3.84TB Entry SAS 12Gb Hot Swap SSD, 4XB7A17058
- ThinkSystem 3.5" PM1643a 7.68TB Entry SAS 12Gb Hot Swap SSD, 4XB7A17059
Introduction
The ThinkSystem PM1643a Entry SAS 12Gb solid-state drives (SSDs) are next-generation SSDs suitable for a wide range of applications. The PM1643a SAS SSDs are designed for dense storage and with a 12 Gb SAS interface, these drives feature all the capacity and performance that is needed to replace large numbers of 15K rpm and 10K rpm spinning disks, and consolidate storage into tightly packed server configurations.
The PM1643a SSDs are the follow-on to the PM1643 SSDs and offer improved random write performance.
Figure 1. ThinkSystem PM1643a 12Gb SAS SSDs
Did you know?
Unlike SATA drives, the 12 Gb/s SAS interface on PM1643a drives supports full duplex data transfer for higher performance, as well as enterprise-level error recovery for better availability.
Rigorous testing of PM1643a Entry SATA SSDs by Lenovo through the ServerProven program assures a high degree of storage subsystem compatibility and reliability. Providing additional peace of mind, these drives are covered under Lenovo warranty.
Part number information
The following table lists the part numbers and feature codes for ThinkSystem servers.
Part number | Feature code | Description |
---|---|---|
2.5-inch hot-swap drives | ||
4XB7A38175 | B91A | ThinkSystem 2.5" PM1643a 960GB Entry SAS 12Gb Hot Swap SSD |
4XB7A38176 | B91B | ThinkSystem 2.5" PM1643a 1.92TB Entry SAS 12Gb Hot Swap SSD |
4XB7A17054 | B91C | ThinkSystem 2.5" PM1643a 3.84TB Entry SAS 12Gb Hot Swap SSD |
4XB7A17055 | B91D | ThinkSystem 2.5" PM1643a 7.68TB Entry SAS 12Gb Hot Swap SSD |
4XB7A17056 | BC4R | ThinkSystem 2.5" PM1643a 15.36TB Entry SAS 12Gb Hot Swap SSD |
3.5-inch hot-swap drives | ||
4XB7A17058 | B91E | ThinkSystem 3.5" PM1643a 3.84TB Entry SAS 12Gb Hot Swap SSD |
4XB7A17059 | BEVK | ThinkSystem 3.5" PM1643a 7.68TB Entry SAS 12Gb Hot Swap SSD |
Features
The ThinkSystem PM1643a Entry SAS SSDs have the following features:
- Enterprise-grade SSD suitable for read-intensive workloads
- Based on Samsung 64-layer V-NAND technology and TLC flash memory
- Endurance of 1 drive-write per day (DWPD) over 5 years
- 2.5-inch or 3.5-inch industry standard form factor with hot-swap tray
- SAS 12 Gbps interface
- Single port host interface
- Protect data integrity from unexpected power loss with Samsung's advanced power-loss protection architecture
- Supports Self-Monitoring, Analysis and Reporting Technology (S.M.A.R.T)
- End-to-end data protection
- Support 16 Initiator with Tag Command Queuing (TCQ) Command Set with a queue-depth of up to 128 commands
- Compliant with SCSI Specification (SAS-3 / SPL-3 / SBC-4 / SPC-4 / SAM-5)
- RoHS Compliant
SSDs have a huge but finite number of program/erase (P/E) cycles, which affect how long they can perform write operations and thus their life expectancy. Entry SSDs typically have a better cost per read IOPS ratio but lower endurance and performance compared to Mainstream or Performance SSDs.
SSD write endurance is typically measured by the number of program/erase (P/E) cycles that the drive incurs over its lifetime, listed as the total bytes of written data (TBW) in the device specification. The TBW value assigned to a solid-state device is the total bytes of written data (based on the number of P/E cycles) that a drive can be guaranteed to complete (% of remaining P/E cycles = % of remaining TBW).
Reaching this limit does not cause the drive to immediately fail. It simply denotes the maximum number of writes that can be guaranteed. A solid-state device will not fail upon reaching the specified TBW. At some point based on manufacturing variance margin, after surpassing the TBW value, the drive will reach the end-of-life point, at which the drive will go into a read-only mode.
Technical specifications
The following tables present technical specifications for the PM1643a Entry SSDs.
Feature | 960 GB drive | 1.92 TB drive | 3.84 TB drive | 7.68 TB drive | 15.36 TB drive |
---|---|---|---|---|---|
Interface | 12 Gbps SAS | 12 Gbps SAS | 12 Gbps SAS | 12 Gbps SAS | 12 Gbps SAS |
Capacity | 960 GB | 1.92 TB | 3.84 TB | 7.68 TB | 15.36 TB |
SED encryption | None | None | None | None | None |
Endurance (drive writes per day for 5 years) |
1 DWPD | 1 DWPD | 1 DWPD | 1 DWPD | 1 DWPD |
Endurance (total bytes written) |
1,752 TB | 3,504 TB | 7,008 TB | 14,016 TB | 28,032 TB |
Data reliability (UBER) |
< 1 in 1017 bits read | < 1 in 1017 bits read | < 1 in 1017 bits read | < 1 in 1017 bits read | < 1 in 1017 bits read |
MTBF | 2,000,000 hours | 2,000,000 hours | 2,000,000 hours | 2,000,000 hours | 2,000,000 hours |
IOPS reads (4 KB blocks) | 230,000 | 230,000 | 230,000 | 230,000 | 230,000 |
IOPS writes (4 KB blocks) | 40,000 | 60,000 | 85,000 | 90,000 | 65,000 |
Sequential read rate (128 KB blocks) |
1,000 MBps | 1,000 MBps | 1,000 MBps | 1,000 MBps | 1,000 MBps |
Sequential write rate (128 KB blocks) |
1,000 MBps | 1,000 MBps | 1,000 MBps | 1,000 MBps | 1,000 MBps |
Read latency (sequential) | 240 µs | 240 µs | 240 µs | 240 µs | 240 µs |
Write latency (sequential) | 220 µs | 220 µs | 220 µs | 220 µs | 220 µs |
Read latency (random) | 120 µs | 120 µs | 120 µs | 130 µs | 130 µs |
Write latency (random) | 45 µs | 45 µs | 45 µs | 45 µs | 45 µs |
Shock, non-operating | 1,500 G (Max) at 0.5 ms | 1,500 G (Max) at 0.5 ms | 1,500 G (Max) at 0.5 ms | 1,500 G (Max) at 0.5 ms | 1,500 G (Max) at 0.5 ms |
Vibration, non-operating | 20 GRMS (10-2000 Hz) | 20 GRMS (10-2000 Hz) | 20 GRMS (10-2000 Hz) | 20 GRMS (10-2000 Hz) | 20 GRMS (10-2000 Hz) |
Typical power (R / W) | 9 W / 12 W | 9 W / 12 W | 9 W / 12 W | 9 W / 12 W | 9 W / 12 W |
Server support
The following tables list the ThinkSystem servers that are compatible.
Part Number | Description | Edge | 1S Intel V2 | AMD V3 | Intel V3 | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SE350 (7Z46 / 7D1X) |
SE350 V2 (7DA9) |
SE360 V2 (7DAM) |
SE450 (7D8T) |
SE455 V3 (7DBY) |
ST50 V2 (7D8K / 7D8J) |
ST250 V2 (7D8G / 7D8F) |
SR250 V2 (7D7R / 7D7Q) |
SR635 V3 (7D9H / 7D9G) |
SR655 V3 (7D9F / 7D9E) |
SR645 V3 (7D9D / 7D9C) |
SR665 V3 (7D9B / 7D9A) |
SR675 V3 (7D9Q / 7D9R) |
ST650 V3 (7D7B / 7D7A) |
SR630 V3 (7D72 / 7D73) |
SR650 V3 (7D75 / 7D76) |
SR850 V3 (7D97 / 7D96) |
SR860 V3 (7D94 / 7D93) |
SR950 V3 (7DC5 / 7DC4) |
||
2.5-inch hot-swap drives | ||||||||||||||||||||
4XB7A38175 | ThinkSystem 2.5" PM1643a 960GB Entry SAS 12Gb Hot Swap SSD | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N |
4XB7A38176 | ThinkSystem 2.5" PM1643a 1.92TB Entry SAS 12Gb Hot Swap SSD | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N |
4XB7A17054 | ThinkSystem 2.5" PM1643a 3.84TB Entry SAS 12Gb Hot Swap SSD | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N |
4XB7A17055 | ThinkSystem 2.5" PM1643a 7.68TB Entry SAS 12Gb Hot Swap SSD | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N |
4XB7A17056 | ThinkSystem 2.5" PM1643a 15.36TB Entry SAS 12Gb Hot Swap SSD | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N |
3.5-inch hot-swap drives | ||||||||||||||||||||
4XB7A17058 | ThinkSystem 3.5" PM1643a 3.84TB Entry SAS 12Gb Hot Swap SSD | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N |
4XB7A17059 | ThinkSystem 3.5" PM1643a 7.68TB Entry SAS 12Gb Hot Swap SSD | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N |
Part Number | Description | Dense V3 | 2S Intel V2 | AMD V1 | Dense V2 | 4S V2 | 8S | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SD665 V3 (7D9P) |
SD665-N V3 (7DAZ) |
SD650 V3 (7D7M) |
SD650-I V3 (7D7L) |
ST650 V2 (7Z75 / 7Z74) |
SR630 V2 (7Z70 / 7Z71) |
SR650 V2 (7Z72 / 7Z73) |
SR670 V2 (7Z22 / 7Z23) |
SR635 (7Y98 / 7Y99) |
SR655 (7Y00 / 7Z01) |
SR655 Client OS |
SR645 (7D2Y / 7D2X) |
SR665 (7D2W / 7D2V) |
SD630 V2 (7D1K) |
SD650 V2 (7D1M) |
SD650-N V2 (7D1N) |
SN550 V2 (7Z69) |
SR850 V2 (7D31 / 7D32) |
SR860 V2 (7Z59 / 7Z60) |
SR950 (7X11 / 7X12) |
||
2.5-inch hot-swap drives | |||||||||||||||||||||
4XB7A38175 | ThinkSystem 2.5" PM1643a 960GB Entry SAS 12Gb Hot Swap SSD | N | N | N | N | Y | Y | Y | Y | Y | Y | N | Y | Y | N | N | N | N | Y | Y | Y |
4XB7A38176 | ThinkSystem 2.5" PM1643a 1.92TB Entry SAS 12Gb Hot Swap SSD | N | N | N | N | Y | Y | Y | Y | Y | Y | N | Y | Y | N | N | N | N | Y | Y | Y |
4XB7A17054 | ThinkSystem 2.5" PM1643a 3.84TB Entry SAS 12Gb Hot Swap SSD | N | N | N | N | Y | Y | Y | Y | Y | Y | N | Y | Y | N | N | N | N | Y | Y | Y |
4XB7A17055 | ThinkSystem 2.5" PM1643a 7.68TB Entry SAS 12Gb Hot Swap SSD | N | N | N | N | Y | Y | Y | Y | Y | Y | N | Y | Y | N | N | N | N | Y | Y | Y |
4XB7A17056 | ThinkSystem 2.5" PM1643a 15.36TB Entry SAS 12Gb Hot Swap SSD | N | N | N | N | Y | Y | Y | Y | N | N | N | Y | Y | N | N | N | N | Y | Y | Y |
3.5-inch hot-swap drives | |||||||||||||||||||||
4XB7A17058 | ThinkSystem 3.5" PM1643a 3.84TB Entry SAS 12Gb Hot Swap SSD | N | N | N | N | Y | Y | Y | N | Y | Y | N | Y | Y | N | N | N | N | N | N | N |
4XB7A17059 | ThinkSystem 3.5" PM1643a 7.68TB Entry SAS 12Gb Hot Swap SSD | N | N | N | N | Y | Y | Y | N | Y | Y | N | Y | Y | N | N | N | N | N | N | N |
Part Number | Description | 4S V1 | 1S Intel V1 | 2S Intel V1 | Dense V1 | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SR850 (7X18 / 7X19) |
SR850P (7D2F / 2D2G) |
SR860 (7X69 / 7X70) |
ST50 (7Y48 / 7Y50) |
ST250 (7Y45 / 7Y46) |
SR150 (7Y54) |
SR250 (7Y52 / 7Y51) |
ST550 (7X09 / 7X10) |
SR530 (7X07 / 7X08) |
SR550 (7X03 / 7X04) |
SR570 (7Y02 / 7Y03) |
SR590 (7X98 / 7X99) |
SR630 (7X01 / 7X02) |
SR650 (7X05 / 7X06) |
SR670 (7Y36 / 7Y37) |
SD530 (7X21) |
SD650 (7X58) |
SN550 (7X16) |
SN850 (7X15) |
||
2.5-inch hot-swap drives | ||||||||||||||||||||
4XB7A38175 | ThinkSystem 2.5" PM1643a 960GB Entry SAS 12Gb Hot Swap SSD | Y | Y | Y | N | N | N | N | Y | Y | Y | Y | Y | Y | Y | N | Y | N | Y | Y |
4XB7A38176 | ThinkSystem 2.5" PM1643a 1.92TB Entry SAS 12Gb Hot Swap SSD | Y | Y | Y | N | N | N | N | Y | Y | Y | Y | Y | Y | Y | N | Y | N | Y | Y |
4XB7A17054 | ThinkSystem 2.5" PM1643a 3.84TB Entry SAS 12Gb Hot Swap SSD | Y | Y | Y | N | N | N | N | Y | Y | Y | Y | Y | Y | Y | N | Y | N | Y | Y |
4XB7A17055 | ThinkSystem 2.5" PM1643a 7.68TB Entry SAS 12Gb Hot Swap SSD | Y | Y | N | N | N | N | N | Y | Y | Y | N | N | Y | Y | N | N | N | Y | Y |
4XB7A17056 | ThinkSystem 2.5" PM1643a 15.36TB Entry SAS 12Gb Hot Swap SSD | Y | N | Y | N | N | N | N | N | Y | N | Y | Y | Y | Y | N | N | N | Y | Y |
3.5-inch hot-swap drives | ||||||||||||||||||||
4XB7A17058 | ThinkSystem 3.5" PM1643a 3.84TB Entry SAS 12Gb Hot Swap SSD | N | N | N | N | N | N | N | Y | Y | Y | Y | Y | Y | Y | N | N | N | N | N |
4XB7A17059 | ThinkSystem 3.5" PM1643a 7.68TB Entry SAS 12Gb Hot Swap SSD | N | N | N | N | N | N | N | Y | Y | Y | N | N | Y | Y | N | N | N | N | N |
Operating system support
SSDs operate transparently to users, storage systems, applications, databases, and operating systems.
Operating system support is based on the controller used to connect to the drives. Consult the controller propduct guide for more information:
- RAID controllers: https://lenovopress.com/servers/options/raid
- SAS HBAs: https://lenovopress.com/servers/options/hba
Warranty
The PM1643a Entry SAS 12Gb SSDs carry a one-year, customer-replaceable unit (CRU) limited warranty. When the SSDs are installed in a supported server, these drives assume the server’s base warranty and any warranty upgrades.
Solid State Memory cells have an intrinsic, finite number of program/erase cycles that each cell can incur. As a result, each solid state device has a maximum amount of program/erase cycles to which it can be subjected. The warranty for Lenovo solid state drives (SSDs) is limited to drives that have not reached the maximum guaranteed number of program/erase cycles, as documented in the Official Published Specifications for the SSD product. A drive that reaches this limit may fail to operate according to its Specifications.
Physical specifications
The PM1643a Entry SAS 12Gb SSDs have the following physical specifications:
Dimensions and weight (approximate, without the hot-swap tray, if applicable):
- Height: 15 mm (0.6 in.)
- Width: 70 mm (2.8 in.)
- Depth: 100 mm (4.0 in.)
- Weight: 158 g (5.6 oz)
Shipping dimensions and weight for the 2.5-inch drives (approximate):
- Height: 63 mm (2.5 in.)
- Width: 133 mm (5.2 in.)
- Depth: 174 mm (6.9 in.)
Shipping dimensions and weight for the 3.5-inch drives (approximate):
- Height: 95 mm (3.7 in.)
- Width: 194 mm (7.6 in.)
- Depth: 257 mm (10.0 in.)
Operating environment
The PM1643a Entry SAS 12Gb SSDs are supported in the following environment:
- Temperature, operating: 0 - 70 °C (32 - 158 °F)
- Temperature, non-operating: -40 to 85 °C (-40 - 185 °F)
- Relative humidity: 5 - 95% (noncondensing)
- Maximum altitude: -300 - 4,572 m (-1,000 to 15,000 feet)
Agency approvals
The PM1643a Entry SAS 12Gb SSDs conform to the following regulations:
- UL
- TUV
- FCC
- IC
- CB
- CE Mark
- C-Tick Mark
- BSMI (Taiwan)
- KCC (Korea EMI)
- VCCI
Related publications and links
For more information, see the following documents:
- Lenovo Press product guides and papers on RAID adapters and HBAs
https://lenovopress.com/servers/options/raid - Lenovo RAID Management Tools and Resources
https://lenovopress.com/lp0579-lenovo-raid-management-tools-and-resources - Lenovo RAID Introduction
https://lenovopress.com/lp0578-lenovo-raid-introduction - Samsung Enterprise SSDs home page
https://www.samsung.com/semiconductor/ssd/enterprise-ssd/
Trademarks
Lenovo and the Lenovo logo are trademarks or registered trademarks of Lenovo in the United States, other countries, or both. A current list of Lenovo trademarks is available on the Web at https://www.lenovo.com/us/en/legal/copytrade/.
The following terms are trademarks of Lenovo in the United States, other countries, or both:
Lenovo®
ServerProven®
ThinkSystem®
The following terms are trademarks of other companies:
Intel® is a trademark of Intel Corporation or its subsidiaries.
Other company, product, or service names may be trademarks or service marks of others.
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Full Change History
Changes in the June 5, 2023 update:
- The following 2.5-inch drives are now withdrawn from marketing:
- ThinkSystem 2.5" PM1643a 1.92TB Entry SAS 12Gb Hot Swap SSD, 4XB7A38176
- ThinkSystem 2.5" PM1643a 3.84TB Entry SAS 12Gb Hot Swap SSD, 4XB7A17054
- ThinkSystem 2.5" PM1643a 7.68TB Entry SAS 12Gb Hot Swap SSD, 4XB7A17055
- The following 3.5-inch drives are now withdrawn from marketing:
- ThinkSystem 3.5" PM1643a 3.84TB Entry SAS 12Gb Hot Swap SSD, 4XB7A17058
- ThinkSystem 3.5" PM1643a 7.68TB Entry SAS 12Gb Hot Swap SSD, 4XB7A17059
Changes in the June 13, 2021 update:
- Removed the following 3.5-inch drive options (never announced):
- ThinkSystem 3.5" PM1643a 960GB Entry SAS 12Gb Hot Swap SSD, 4XB7A77115
- ThinkSystem 3.5" PM1643a 1.92TB Entry SAS 12Gb Hot Swap SSD, 4XB7A77116
Changes in the May 25, 2021 update:
- New 3.5-inch drive options:
- ThinkSystem 3.5" PM1643a 960GB Entry SAS 12Gb Hot Swap SSD, 4XB7A77115
- ThinkSystem 3.5" PM1643a 1.92TB Entry SAS 12Gb Hot Swap SSD, 4XB7A77116
Changes in the February 9, 2021 update:
- The server support tables are now automatically updated - Server support section
Changes in the December 8, 2020 update:
- The drives are now supported in the SR645 and SR665 servers - Server support section
Changes in the October 13, 2020 update:
- Added the SR850 V2 and SR860 V2 servers - Server support section (no support)
Changes in the September 8, 2020 update:
- New 3.5-inch drive option:
- ThinkSystem 3.5" PM1643a 7.68TB Entry SAS 12Gb Hot Swap SSD, 4XB7A17059
Changes in the May 5, 2020 update:
- Added SR645 and SR665 to the server support table - Server support section (no support)
Changes in the March 10, 2020 update:
- New 15.36 TB drive option:
- ThinkSystem 2.5" PM1643a 15.36TB Entry SAS 12Gb Hot Swap SSD, 4XB7A17056
Changes in the January 7, 2020 update:
- Added SR850P to the server support table (no support) - Server support section
First published: 13 December 2019