Lenovo ThinkSystem PM1645a Mainstream 12Gb SAS SSDs User Guide
- June 3, 2024
- Lenovo
Table of Contents
- Product Guide
- Did you know?
- Part number information
- Features
- Technical specifications
- Server support
- Operating system support
- Warranty
- Physical specifications
- Operating environment
- Agency approvals
- Related publications and links
- Related product families
- Notices
- Trademarks
- References
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)
Lenovo Think System PM1645a Mainstream 12Gb SAS SSDs User Guide
Product Guide
The Think System PM1645a Mainstream SAS 12Gb solid-state drives (SSDs) in
capacities of up to 6.4 TB are next-generation high-performance SSDs suitable
for a wide range of applications of running on Think System servers. The
PM1645a SSDs are the follow-on to the PM1645 SSDs and offer improved random
write performance.
Did you know?
Unlike SATA drives, the 12 Gb/s SAS interface on these drives supports full duplex data transfer for higher performance, and enterprise-level error recovery for better availability. By combining the enhanced reliability of Samsung NAND flash memory silicon with NAND Flash management technologies, PM1645a SSDs deliver the extended endurance of up to 3 drive writes per day (DWPD) for 5 years, which is suitable for many enterprise applications.
Part number information
The following tables list the information for ordering part numbers and feature codes.
Table 1. Ordering part numbers and feature codes
Part number | Feature code | Description |
---|
2.5-inch hot-swap drives
4XB7A17062| B8HU| Think System 2.5″ PM1645a 800GB Mainstream SAS 12Gb Hot Swap
SSD
4XB7A17063| B8J4| Think System 2.5″ PM1645a 1.6TB Mainstream SAS 12Gb Hot Swap
SSD
4XB7A17064| B8JD| Think System 2.5″ PM1645a 3.2TB Mainstream SAS 12Gb Hot Swap
SSD
4XB7A17065| B8JA| Think System 2.5″ PM1645a 6.4TB Mainstream SAS 12Gb Hot Swap
SSD
3.5-inch hot-swap drives
4XB7A17066| B8HT| Think System 3.5″ PM1645a 800GB Mainstream SAS 12Gb Hot Swap
SSD
4XB7A17043| B8JN| Think System 3.5″ PM1645a 1.6TB Mainstream SAS 12Gb Hot Swap
SSD
4XB7A17067| B8JK| Think System 3.5″ PM1645a 3.2TB Mainstream SAS 12Gb Hot Swap
SSD
4XB7A17068| B8JG| Think System 3.5″ PM1645a 6.4TB Mainstream SAS 12Gb Hot Swap
SSD
The part numbers include the following items:
- One solid-state drive with a hot-swap tray
- Documentation flyer
Features
One solid-state drive with a hot-swap tray Documentation flyer
- Mainstream server SSD suitable for mixed read-write-intensive workloads
- Endurance of 3 drive-writes per day (DWPD)
- 2.5-inch or 3.5-inch industry standard form factor with hot-swap tray
- SAS 12 Gbps 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
Entry SSDs and Mainstream SSDs have similar read and write IOPS performance,
but the key difference between them is their endurance (or lifetime) (that is,
how long they can perform write operations because SSDs have a finite number
of program/erase (P/E) cycles). Mainstream SSDs have better endurance but
lower cost/IOPS ratio compared to Entry 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.
Comparing PM1643a and PM1645a drives from Lenovo : Samsung has authorized Lenovo to offer both PM1643a and PM1645a SSDs. These two product families use common drive hardware but use custom Lenovo firmware to set the level of endurance 1 DWPD (drive write per day) for the PM1643a drives and 3 DWPD for the PM1645a drives. The PM1645a drives are part of the Samsung design specification but are only available with Lenovo firmware. PM1645a drives are not available from Samsung with generic firmware.
Technical specifications
The following tables present technical specifications for the PM1645a Mainstream SAS 12Gb SSDs.
Table 2. Technical specifications
Feature| 800 GB drive| 1.6 TB drive| 3.2 TB drive| 6.4
TB drive
---|---|---|---|---
Interface| 12 Gbps SAS| 12 Gbps SAS| 12 Gbps SAS| 12 Gbps SAS
Capacity| 800 GB| 1.6 TB| 3.2 TB| 6.4 TB
SED encryption| None| None| None| None
Endurance (drive writes per day for 5 years)| 3 DWPD| 3 DWPD| 3 DWPD| 3 DWPD
Endurance (total bytes written)| 4,380 TB| 8,760 TB| 17,520 TB| 35,040 TB
Data reliability (UBER)| < 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
IOPS reads (4 KB blocks)| 230,000| 230,000| 230,000| 230,000
IOPS writes (4 KB blocks)| 90,000| 130,000| 140,000| 140,000
Sequential read rate (128 KB blocks)| 1000MBps| 1000MBps| 1000MBps| 1000MBps
Sequential write rate (128 KB blocks)| 1000MBps| 1000 MBps| 1000MBps| 1000MBps
Read latency (ran)| 120 µs| 120 µs| 120 µs| 130 µs
Write latency (ran)| 45 µs| 45 µs| 45 µs| 45 µs
Shock, non-operating| 1,500 G (Max) at 0.5 ms| 1,500 G (Max) at 0.5ms| 1,500 G
(Max) at 0.5ms| 1,500 G (Max) at 0.5ms
Vibration, non-operating| 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 / 9 W| 9 W / 9 W| 9 W / 9 W| 9 W / 9 W
Server support
The following tables list the ThinkSystem servers that are compatible.
Table 3. Server support (Part 1 of 2)
Part Number
| Description|
Edge
| 1S Intel V2| 2S Intel V2|
AMD
|
Dense V2
| 4S V2|
8S
---|---|---|---|---|---|---|---|---
SE350 (7Z46 / 7D1X)| SE450 (7D8T)| ST50 V2 (7D8K / 7D8J)|
ST250 V2 (7D8G / 7D8F)| SR250 V2 (7D7R / 7D7Q)| ST650 V2 (7Z75 /
7Z74)| SR630 V2 (7Z70 / 7Z71)| SR650 V2 (7Z72 / 7Z73)| SR670 V2
(7Z22 / 7Z23)| SR635 (7Y98 / 7Y99)| SR655 (7Y00 / 7Z01)| 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
4XB7A17062
| ThinkSystem 2.5″ PM1645a 800GB Mainstream SAS 12Gb Hot Swap SSD| N| N| N| N|
N| Y| Y| Y| Y| Y| Y| Y| Y| N| N| N| Y| Y| Y| Y
4XB7A17063| ThinkSystem 2.5″ PM1645a 1.6TB Mainstream SAS 12Gb Hot Swap SSD|
N| N| N| N| N| Y| Y| Y| Y| Y| Y| Y| Y| N| N| N| N| Y| Y|
Y
4XB7A17064
| ThinkSystem 2.5″ PM1645a 3.2TB Mainstream SAS 12Gb Hot Swap SSD| N| N| N| N|
N| Y| Y| Y| Y| Y| Y| Y| Y| N| N| N| N| Y| Y| Y
4XB7A17065| ThinkSystem 2.5″ PM1645a 6.4TB Mainstream SAS 12Gb Hot Swap SSD|
N| N| N| N| N| Y| Y| Y| Y| Y| Y| Y| Y| N| N| N| N| Y| Y|
Y
3.5-inch hot-swap drives
4XB7A17066
| ThinkSystem 3.5″ PM1645a 800GB Mainstream SAS 12Gb Hot Swap SSD| N| N| N| N|
N| Y| Y| Y| N| Y| Y| Y| Y| N| N| N| N| N| N| N
4XB7A17043| ThinkSystem 3.5″ PM1645a 1.6TB Mainstream SAS 12Gb Hot Swap SSD|
N| N| N| N| N| Y| Y| Y| N| Y| Y| Y| Y| N| N| N| N| N| N|
N
4XB7A17067
| ThinkSystem 3.5″ PM1645a 3.2TB Mainstream SAS 12Gb Hot Swap SSD| N| N| N| N|
N| Y| Y| Y| N| Y| Y| Y| Y| N| N| N| N| N| N| N
4XB7A17068| ThinkSystem 3.5″ PM1645a 6.4TB Mainstream SAS 12Gb Hot Swap SSD|
N| N| N| N| N| Y| Y| Y| N| Y| Y| Y| Y| N| N| N| N| N| N|
N
Table 4. Server support (Part 2 of 2)
Part Number
| Description| 1S Intel V1| 2S Intel V1| Dense V1| 4S
V1
---|---|---|---|---|---
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)| SR850
(7X18 / 7X19)| SR850P (7D2F / 2D2G)|
SR860 (7X69 / 7X70)
2.5-inch hot-swap drives
4XB7A17062
| ThinkSystem 2.5″ PM1645a 800GB Mainstream SAS 12Gb Hot Swap SSD| N| N| N| N|
Y| Y| Y| Y| Y| Y| Y| Y| Y| N| Y| Y| Y| Y| Y
4XB7A17063| ThinkSystem 2.5″ PM1645a 1.6TB Mainstream SAS 12Gb Hot Swap SSD|
N| N| N| N| Y| Y| Y| Y| Y| Y| Y| Y| Y| N| Y| Y| Y| Y|
Y
4XB7A17064
| ThinkSystem 2.5″ PM1645a 3.2TB Mainstream SAS 12Gb Hot Swap SSD| N| N| N| N|
Y| Y| Y| Y| Y| Y| Y| Y| Y| N| Y| Y| Y| Y| Y
4XB7A17065| ThinkSystem 2.5″ PM1645a 6.4TB Mainstream SAS 12Gb Hot Swap SSD|
N| N| N| N| Y| Y| Y| Y| Y| Y| Y| Y| Y| N| Y| Y| Y| Y|
Y
3.5-inch hot-swap drives
4XB7A17066
| ThinkSystem 3.5″ PM1645a 800GB Mainstream SAS 12Gb Hot Swap SSD| N| N| N| N|
Y| Y| Y| Y| Y| Y| Y| N| N| N| N| N| N| N| N
4XB7A17043| ThinkSystem 3.5″ PM1645a 1.6TB Mainstream SAS 12Gb Hot Swap SSD|
N| N| N| N| Y| Y| Y| Y| Y| Y| Y| N| N| N| N| N| N| N|
N
4XB7A17067
| ThinkSystem 3.5″ PM1645a 3.2TB Mainstream SAS 12Gb Hot Swap SSD| N| N| N| N|
Y| Y| Y| Y| Y| Y| Y| N| N| N| N| N| N| N| N
4XB7A17068| ThinkSystem 3.5″ PM1645a 6.4TB Mainstream SAS 12Gb Hot Swap SSD|
N| N| N| N| Y| Y| Y| Y| Y| Y| Y| N| N| N| N| N| N| N|
N
Operating system support
SAS 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 PM1645a Mainstream 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 system’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
PM1645a Mainstream 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: 140 g (4.9 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
PM1645a Mainstream 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
PM1645a Mainstream 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/
Related product families
Product families related to this document are the following:
Notices
Lenovo may not offer the products, services, or features discussed in this document in all countries. Consult your local Lenovo representative for information on the products and services currently available in your area. Any reference to a Lenovo product, program, or service is not intended to state or imply that only that Lenovo product, program, or service may be used. Any functionally equivalent product, program, or service that does not infringe any Lenovo intellectual property right may be used instead. However, it is the user’s responsibility to evaluate and verify the operation of any other product, program, or service. Lenovo may have patents or pending patent applications covering subject matter described in this document. The furnishing of this document does not give you any license to these patents. You can send license inquiries, in writing, to:
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Attention: Lenovo Director of Licensing
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Any references in this publication to non-Lenovo Web sites are provided for convenience only and do not in any manner serve as an endorsement of those Web sites. The materials at those Web sites are not part of the materials for this Lenovo product, and use of those Web sites is at your own risk. Any performance data contained herein was determined in a controlled environment. Therefore, the result obtained in other operating environments may vary significantly. Some measurements may have been made on development-level systems and there is no guarantee that these measurements will be the same on generally available systems. Furthermore, some measurements may have been estimated through extrapolation. Actual results may vary. Users of this document should verify the applicable data for their specific environment.
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This document, LP1258, was created or updated on February 9, 2021.
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References
- Lenovo RAID Introduction > Lenovo Press
- Lenovo RAID Management Tools and Resources (withdrawn product) > Lenovo Press
- RAID Adapters > Lenovo Press
- ThinkSystem PM1645a Mainstream 12Gb SAS SSDs Product Guide > Lenovo Press
- ThinkSystem PM1645a Mainstream 12Gb SAS SSDs > Lenovo Press
- Copyright and Trademark Information | Lenovo US | Lenovo US
- Enterprise SSD | SSD | Samsung Semiconductor Global
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