Lenovo ThinkSystem Kioxia CM6-V Mainstream NVMe PCIe 4.0 x4 SSDs User Guide

ThinkSystem Kioxia CM6-V Mainstream NVMe PCIe
4.0 x4 SSDs
Product Guide

The ThinkSystem Kioxia CM6-V Mainstream NVMe PCIe 4.0 x4 solid-state drives (SSDs) in capacities up to 6.4 TB are advanced data center SSDs optimized for mixed read-write performance, endurance, and strong data protection for Lenovo servers. With a PCIe 4.0 x4 interface, they are designed for greater performance and endurance in a cost-effective design, and to support a broader set of workloads.

Figure 1. ThinkSystem Kioxia CM6-V Mainstream NVMe PCIe 4.0 x4 SSD

Did you know?
The Kioxia CM6 drives have a PCIe 4.0 (Gen 4) host interface, where sequential performance is doubled over the PCIe 3.0 host interface. The drives are also fully compatible with a PCIe 3.0 host interface providing optimal performance and enabling compatibility across server families.
NVMe (Non-Volatile Memory Express) is a technology that overcomes SAS/SATA SSD performance limitations by optimizing hardware and software to take full advantage of flash technology. The use of NVMe drives means data is transferred more efficiently from the processor to the drives compared to the legacy Advance Host Controller  Interface (AHCI) stack, thereby reducing latency and overhead. These SSDs connect directly to the processor via the PCIe bus, further reducing latency and TCO.

Part number information

The following table lists the part numbers and feature codes for ThinkSystem servers.
Table 1. Part numbers and feature codes for ThinkSystem

2.5-inch hot-swap drives
4XB7A64175| BE03| ThinkSystem U.3 Kioxia CM6-V 800GB Mainstream NVMe PCIe 4.0 x4 Hot Swap SSD
4XB7A17112| B96Z| ThinkSystem U.3 Kioxia CM6-V 1.6TB Mainstream NVMe PCIe4.0 x4 Hot Swap SSD
4XB7A17113| B96T| ThinkSystem U.3 Kioxia CM6-V 3.2TB Mainstream NVMe PCIe4.0 x4 Hot Swap SSD
4XB7A17114| B96P| ThinkSystem U.3 Kioxia CM6-V 6.4TB Mainstream NVMe PCIe4.0 x4 Hot Swap SSD
3.5-inch hot-swap drives
4XB7A64176| BE04| ThinkSystem 3.5″ Kioxia CM6-V 800GB Mainstream NVMe PCIe 4.0 x4 Hot Swap SSD
4XB7A17115| B96V| ThinkSystem 3.5″ Kioxia CM6-V 1.6TB Mainstream NVMe PCIe4.0 x4 Hot Swap SSD
4XB7A17116| B96K| ThinkSystem 3.5″ Kioxia CM6-V 3.2TB Mainstream NVMe PCIe4.0 x4 Hot Swap SSD
4XB7A17117| B96W| ThinkSystem 3.5″ Kioxia CM6-V 6.4TB Mainstream NVMe PCIe4.0 x4 Hot Swap SSD
Trayless drives
4XB7A63069| BCNB| ThinkSystem Kioxia CM6-V 2.5 15mm 1.6TB Mainstream NVMe PCIe 4.0 x4 Trayless SSD
4XB7A63070| BCN9| ThinkSystem Kioxia CM6-V 2.5″ 15mm 3.2TB Mainstream NVMe PCIe 4.0 x4 Trayless SSD

The part numbers include the following items:

• One 2.5-inch solid-state drive
• 2.5-inch or 3.5-inch hot-swap tray (hot-swap drives only)
• Documentation

Features

Non-Volatile Memory Express (NVMe) is PCIe high-performance SSD technology that provides high I/O throughput and low latency. NVMe interfaces remove SAS/SATA  bottlenecks and unleash all of the capabilities of contemporary NAND flash memory. Each NVMe PCI SSD has a direct PCIe x4 connection, which provides a significantly greater bandwidth and lower latency than SATA/SAS- based SSD solutions.
NVMe drives are also optimized for heavy multi-threaded workloads by using internal parallelism and many other improvements, such as enlarged I/O queues.
The ThinkSystem Kioxia CM6-V Mainstream NVMe SSDs have the following features:

• Two form factors:
  • 2.5-inch (U.3, which is backward compatible with U.2) hot-swap drive tray
  • 3.5-inch hot-swap drive tray
• Based on the Kioxia KCM61VUL drives (formerly Toshiba)
• 96-layer BiCS FLASH 3D TLC memory
• 3 drive-write-per-day (DWPD) SSD for mixed read-write workloads
• PCIe 4.0 x4 host connection for each NVMe drive, resulting in up to 6.9 Gbps overall throughput.
• Full Power-Loss-Protection and End-to-End Data Protection
• Low power consumption (maximum 20 W)

Mainstream SSDs and Performance 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 a better cost/IOPS ratio but lower endurance compared to 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 the 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.

Because of such behavior by Mainstream solid-state drives, careful planning must be done to use them only in mixed read-write environments to ensure that the TBW of the drive will not be exceeded before the required life expectancy.

For example, the 3.2 TB drive has an endurance of 17,520 TB of total bytes written (TBW). This means that for full operation over five years, the write workload must be limited to no more than 9.6 TB of writes per day, which is equivalent to 3.0 full drive writes per day (DWPD). For the device to last three years, the drive writes workload must be limited to no more than 16 TB of writes per day, which is equivalent to 5.0 full drive writes per day.

Technical specifications

The following table presents technical specifications for the ThinkSystem Kioxia CM6-V Mainstream NVMe SSDs.
Table 2. Technical specifications

Feature| 800 GB drive| 1.6 TB drive| 3.2 TB drive| 6.4 TB drive
---|---|---|---|---
Host interface| PCIe 4.0 x4| PCIe 4.0 x4| Pole 4.0 x4| PCIe 4.0 x4
Capacity| 800 GB| 1.6 TB| 3.2 TB| 6.4 TB
SED encryption| None| None| None| None
Endurance (total bytes written)| 4,380 TB| 8,760 TB| 17,520 TB| 35,040 TB
Endurance (drive writes per day for 5 years)| 3.0 DWPD| 3.0 DWPD| 3.0 DWPD| 3.0 DWPD
Data reliability (UBER)| < 1 in 1017 bits read| < 1 in 1017 bits read| < 1 in 1017 bits read| < 1 in 1017 bits read
MTBF| 2,500,000 hours| 2,500,000 hours| 2,500,000 hours| 2,500,000 hours
lOPS reads (4 KB blocks, PCIe 4.0)| 880,000| 1,300,000| 1,400,000| 1,400,000
lOPS writes (4 KB blocks, PCIe 4.0)| 100,000| 215,000| 350,000| 325,000
Sequential read rate (128 KB blocks, PCIe 4.0)| 6900 MBps| 6900 MBps| 6900 MBps| 6900 MBps
Sequential write rate (128 KB blocks, PCIe 4.0)| 1400 MBps| 2800 MBps| 4200 MBps| 4000 MBps
Latency (random read)| 90 ps| 90 ps| 90 ps| 90 ps
Latency (random write)| 10 ps| 10 ps| 10 ps| 10 ps
Maximum power| 14 W| 16 W| 19 W| 20 W

Server support

The following tables list the ThinkSystem servers that are compatible.
Table 3. Server support (Part 1 of 2)

Table 4. Server support (Part 2 of 2)

Storage controller support
NVMe PCIe SSDs require an NVMe drive backplane and some form of PCIe connection to processors. PCIe connections can take the form of either an adapter (PCIe  Interposer or PCIe extender/switch adapter) or simply a cable that connects to an onboard NVMe connector.

PCIe 3.0 support: The Kioxia CM6-V drives offer a PCIe 4.0 host interface, however, they are backward compatible with a PCIe 3.0 host interface. Note however that server with a PCIe 3.0 host interface will not see the same performance levels (especially sequential read and write rates). ThinkSystem NVMe switch adapters also provide a PCIe 3.0 host interface to attached drives.
Consult the relevant server product guide for details about the required components for NVMe drive support.

Operating system support

The following table lists the supported operating systems.
Tip: These tables are automatically generated based on data from Lenovo ServerProven.
Table 5. Operating system support for ThinkSystem U.3 Kioxia CM6-V 1.6TB Mainstream NVMe PCIe 4.0 x4 Hot Swap SSD, 4XB7A17112 (Part 1 of 3)

1. RHEL 7.6 does not support EPYC 7003 processors.
2. RHEL7.7 does Not support EPYC 7003 processors.
3. RHEL7.8 Not support with EPYC 7003 processors
4. RHEL7.9 Not support with EPYC 7003 processors.
5. RHEL8.0 Not support with EPYC 7003 processors.
6. RHEL8.1 Not support with EPYC 7003 processors.
7. RHEL8.2 Not support with EPYC 7003 processors.
8. SLES12 SP4 Not support with EPYC 7003 processors
9. SLES12 SP4 Xen Not support with EPYC 7003 processors
10. SLES15 SP1 Not support with EPYC 7003 processors
11. SLES15 SP1 Xen Not support with EPYC 7003 processors.
12. VMware 6.5 U3 Not support with EPYC 7003 processors.
13. VMware 7.0 Not support by EPYC 7003 processors.
14. VMware 7.0 U1 Not support EPYC 7003 processors.
15. RHEL7.6 Not support with EPYC 7003 processors
16. RHEL7.7 Not support with EPYC 7003 processors
17. RHEL7.9 Not support with EPYC 7003 processors
18. RHEL8.1 Not support with EPYC 7003 processors
19. RHEL8.2 Not support with EPYC 7003 processors
20. SLES15 SP1 Xen Not support with EPYC 7003 processors
21. VMware 7.0 Not support with EPYC 7003 processors
22. ISG will not sell/preload this OS, but compatibility and cert only.
23. RHEL 7.6 Not support with EPYC 7003 processors
24. RHEL8.0 Not support with EPYC 7003 processors
25. VMware 6.5 U3 Not support with EPYC 7003 processors
26. VMware 7.0 U1 does Not support EPYC 7003 processors
27. RHEL7.6 Not support with EPYC 7003 processors.

Table 6. Operating system support for ThinkSystem U.3 Kioxia CM6-V 1.6TB Mainstream NVMe PCIe 4.0 x4 Hot Swap SSD, 4XB7A17112 (Part 2 of 3)

Table 7. Operating system support for ThinkSystem U.3 Kioxia CM6-V 1.6TB Mainstream NVMe PCIe 4.0 x4 Hot Swap SSD, 4XB7A17112 (Part 3 of 3)

Warranty

The ThinkSystem Kioxia CM6-V Mainstream NVMe 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 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 ThinkSystem Kioxia CM6-V Mainstream NVMe SSDs have the following physical specifications:
Dimensions and weight (approximate, without the drive tray):

• Height: 15 mm (0.6 in.)
• Width: 70 mm (2.8 in.)
• Depth: 100 mm (4.0 in.)
• Weight: 130 g (5.3 oz)

Operating environment

The ThinkSystem Kioxia CM6-V Mainstream NVMe SSDs are supported in the following environment:

• Temperature:
  • Operating: 0 to 70 °C (32 to 158 °F)
  • Transport: -40 to 80 °C (-40 to 176 °F)
• Relative humidity: 5 to 95% (non-condensing)
• Maximum altitude:
  • Operating: 5,486 m (18,000 ft)
  • Non-operating: 12,192 m (40,000 ft)
• Shock: 1,000 G (Max) at 0.5 ms Vibration: 2.17 G (5-800 Hz)

Agency approvals
The ThinkSystem Kioxia CM6-V Mainstream NVMe SSDs conform to the following regulations:

• Underwriters Laboratories: UL60950-1
• Canada: CAN/CSA-C22.2 No.60950-1
• TUV: EN 60950-1
• BSMI (Taiwan): CNS 13438 (CISPR Pub. 22 Class B): D33003
• MSIP: KN22, KN24 (CISPR Pub. 22 Class B)
• Australia/New Zealand: AS/NZS CISPR32:2015 Class B
• Canada: ICES-003 Issue 6 Class B
• EMC: EN55022 (2015) Class B
• EMC: EN55035 (2017)
• RoHS 2011/65/EU: EN50581 (2012) Category 3

Related publications and links
For more information, see the following documents:

• Lenovo ThinkSystem SSD Portfolio
  https://lenovopress.com/lp1261-lenovo-thinksystem-ssd-portfolio

• Lenovo ThinkSystem storage options product web page
  https://lenovopress.com/lp0761-storage-options-for-thinksystem-servers

• Kioxia product page for the CM6-V product family:
  https://business.kioxia.com/en-us/ssd/enterprise-ssd/cm6-v.html

Related product families
Product families related to this document are the following:

• Drives

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 the 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 the 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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8001 Development Drive
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The U.S.A.
Attention: Lenovo Director of Licensing

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This information could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in new editions of the publication. Lenovo may make improvements and/or changes in the product(s) and/or the program(s) described in this publication at any time without notice.

The products described in this document are not intended for use in implantation or other life support applications where malfunction may result in injury or death to persons. The information contained in this document does not affect or change Lenovo product specifications or warranties. Nothing in this document shall operate as an express or implied license or indemnity under the intellectual property rights of Lenovo or third parties. All information contained in this document was obtained in specific environments and is presented as an illustration. The result obtained in other operating environments may vary. Lenovo may use or distribute any of the information you supply in any way it believes appropriate without incurring any obligation to you.

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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References

• CM6-V Series NVMe™ SSD 2.5-inch (U.3) | KIOXIA - United States (English)
• Lenovo ThinkSystem SSD Portfolio > Lenovo Press
• ThinkSystem Kioxia CM6-V Mainstream NVMe PCIe 4.0 x4 SSDs Product Guide > Lenovo Press
• Copyright and Trademark Information | Lenovo US | Lenovo US
• Welcome | ServerProven

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