ThinkSystem PM1735 Mainstream NVMe PCIe 4.0 x8 Flash AdaptersProduct Guide

Author
Updated
10 Jul 2020
Form Number
LP1312
PDF size
8 pages, 99 KB

Abstract

The Lenovo PM1735 Mainstream NVMe PCIe flash storage adapters available in 1.6 and 3.2 TB capacities are high-performance NVMe PCIe add-in cards. They are engineered for greater performance and endurance in a cost-effective design, and to support a broader set of workloads.

This product guide provides essential presales information to understand the Mainstream PCIe flash storage adapters 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 AICs and consider their use in IT solutions.

Change History

Changes in the July 10 update:

Introduction

The Lenovo PM1735 Mainstream NVMe PCIe flash storage adapters available in 1.6 and 3.2 TB capacities are high-performance NVMe PCIe add-in cards. They are engineered for greater performance and endurance in a cost-effective design, and to support a broader set of workloads.

ThinkSystem PM1735 Mainstream NVMe PCIe 4.0 x8 Flash Adapter
Figure 1. ThinkSystem PM1735 Mainstream NVMe PCIe 4.0 x8 Flash Adapter

Did you know?

The PM1735 family of flash storage adapters are the first PCIe 4.0 add-in cards (AICs) in the ThinkSystem portfolio. By having a Gen 4 host interface, sequential performance is increased compared to Gen 3 adapters. The NVMe host interface also maximizes flash storage performance and minimizes latency.

Lenovo Mainstream flash adapters are suitable for mixed read-write and general-purpose data center workloads, however their NVMe PCIe interface means the adapters also offer high performance. Overall, these AICs provide outstanding IOPS/watt and cost/IOPS for enterprise solutions.

Part number information

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

Table 1. Ordering information
Part number Feature code Description
4XB7A14075 B8JH ThinkSystem HHHL PM1735 1.6TB Mainstream NVMe PCIe 4.0 x8 Flash Adapter
4XB7A14076 B8HW ThinkSystem HHHL PM1735 3.2TB Mainstream NVMe PCIe 4.0 x8 Flash Adapter

The part numbers include the following items:

  • One adapter
  • Low profile (2U) bracket attached with Full height (3U) bracket in the box
  • Documentation flyer

Features

The PM1735 offers outstanding performance with a PCIe 4.0 interface (supports up to 16 Gbps per lane) and the the highly efficient NVMe protocol. The PM1735 delivers bandwidth of up to 8.0 GB/s for sequential read speed and up to 3.8 GB/s for sequential write speed. The PM1735 also delivers latency of 100 µs for random 4KB read of 1500K IOPS and 25 µs for random 4KB write of 250K IOPS in a sustained state.

By combining the enhanced reliability of Samsung NAND flash memory silicon with NAND flash management technologies, the PM1735 deliver the extended endurance of up to 3 drive writes per day (DWPD) for 5 years, which is suitable for enterprise applications.

The PM1735 Mainstream NVMe Flash Adapters has the following features:

  • PCIe 4.0 x8 connection, resulting in up to 8 GBps overall throughput.
  • Advanced ECC Engine and End-to-End Data Protection
  • Samsung’s SSD virtualization technology allows a single SSD to be subdivided into smaller SSDs, up to 64, providing independent virtual workspaces. It also enables SSDs to take on certain tasks typically carried out by the server CPUs, such as Single-Root I/O Virtualization (SR-IOV), requiring fewer server CPUs and SSDs.
  • V-NAND Machine Learning enables the flash adapter to accurately predict and verify cell characteristics, as well as detect any variations in circuit patterns.
  • Fail-In-Place technology ensures the flash adapter operates normally even when errors occur at the chip level. It allows the PM1735 to identify failing NAND cells, and actually recover then relocate the data without interrupting normal operations or impacting performance.
  • 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).

Entry solid-state devices and Mainstream solid-state devices 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 flash adapters have a finite number of program/erase (P/E) cycles). Mainstream devices have better endurance but lower cost/IOPS ratio compared to Entry devices. Write endurance is typically measured by the number of program/erase (P/E) cycles that the devices 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 device can be guaranteed to complete (% of remaining P/E cycles = % of remaining TBW). Reaching this limit does not cause the device 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 device will reach the end-of-life point, at which the device will go into a read-only mode.

Because of such behavior, careful planning must be done to use SSDs in the application environments to ensure that the TBW of the device is not exceeded before the required life expectancy.

For example, the 1.6 TB PM1735 has an endurance of 8,760 TB of total bytes written (TBW). This means that for full operation over five years, write workload must be limited to no more than 4,800 GB of writes per day, which is equivalent to 3.0 full drive writes per day (DWPD). For the device to last three years, the write workload must be limited to no more than 8,000 GB of writes per day, which is equivalent to 5.0 full drive writes per day.

Technical specifications

The following tables present technical specifications for the PM1735 Mainstream NVMe Flash Adapters.

Table 2. Technical specifications
Feature 1.6 TB adapter 3.2 TB adapter
Interface PCIe 4.0 x8 PCIe 4.0 x8
Capacity 1.6 TB 3.2 TB
Endurance (total bytes written) 8.76 PB 17.52 PB
Endurance (drive writes per day for 5 years) 3 DWPD 3 DWPD
Data reliability (UBER) < 1 in 1017 bits read < 1 in 1017 bits read
MTBF 2,000,000 hours 2,000,000 hours
IOPS reads (4 KB blocks) 1,000,000 1,500,000
IOPS writes (4 KB blocks) 200,000 250,000
Sequential read rate (128 KB blocks) 7000 MBps 8000 MBps
Sequential write rate (128 KB blocks) 2400 MBps 3800 MBps
Latency (random R/W) 100 µs / 25 µs 100 µs / 25 µs
Latency (sequential R/W) 220 µs / 80 µs 220 µs / 80 µs
Typical power (R/W) 17 W / 17 W 19 W / 22 W

Server support

The following tables list the ThinkSystem servers that are compatible.

Table 3. ThinkSystem server support (Part 1)
Part number Description Intel 2S AMD
ST550 (7X09/7X10)
SR530 (7X07/7X08)
SR550 (7X03/7X04)
SR570 (7Y02/7Y03)
SR590 (7X98/7X99)
SR630 (7X01/7X02)
SR650 (7X05/7X06)
SR670 (7Y36/37/38)
SR635 (7Y98/7Y99)
SR655 (7Y00/7Z01)
SR645 (7D2Y/7D2X)
SR665 (7D2W/7D2V)
4XB7A14075 ThinkSystem HHHL PM1735 1.6TB Mainstream NVMe PCIe 4.0 x8 Flash Adapter N N N N N N N N N N Y Y
4XB7A14076 ThinkSystem HHHL PM1735 3.2TB Mainstream NVMe PCIe 4.0 x8 Flash Adapter N N N N N N N N N N Y Y
Table 4. ThinkSystem server support (Part 2)
Part number Description E 1S Intel 4S Intel Dense/ Blade
SE350 (7Z46/7D1X)
ST50 (7Y48/7Y50)
ST250 (7Y45/7Y46)
SR150 (7Y54)
SR250 (7Y51/7Y52)
SR850 (7X18/7X19)
SR850P (7D2F/2D2G)
SR860 (7X69/7X70)
SR950 (7X11/12/13)
SD530 (7X21)
SD650 (7X58)
SN550 (7X16)
SN850 (7X15)
4XB7A14075 ThinkSystem HHHL PM1735 1.6TB Mainstream NVMe PCIe 4.0 x8 Flash Adapter N N N N N N N N N N N N N
4XB7A14076 ThinkSystem HHHL PM1735 3.2TB Mainstream NVMe PCIe 4.0 x8 Flash Adapter N N N N N N N N N N N N N

Operating system support

The following table lists the supported operating systems.

Tip: This table is automatically generated based on data from Lenovo ServerProven.

Table 5. Operating system support for ThinkSystem HHHL Samsung PM1735 1.6TB Mainstream NVMe PCIe4.0 x8 Flash Adapter, 4XB7A14075
Operating systems
SR645
SR665
Microsoft Windows Server 2016 Y Y
Microsoft Windows Server 2019 Y Y
Red Hat Enterprise Linux 7.6 Y Y
Red Hat Enterprise Linux 8.1 Y Y
SUSE Linux Enterprise Server 12 SP5 Y Y
SUSE Linux Enterprise Server 12 SP5 with Xen Y Y
SUSE Linux Enterprise Server 15 SP1 Y Y
VMware vSphere Hypervisor (ESXi) 6.7 U3 Y Y
VMware vSphere Hypervisor (ESXi) 7.0 Y Y

Warranty

The PM1735 flash adapters carry a one-year, customer-replaceable unit (CRU) limited warranty. When the adapters are installed in a supported server, these adapters 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 flash adapters is limited to adapters that have not reached the maximum guaranteed number of program/erase cycles, as documented in the Official Published Specifications for the product. An adapter that reaches this limit may fail to operate according to its Specifications.

Physical specifications

The PM1735 flash adapters have the following physical specifications:

  • Height: 69 mm (2.7 in.)
  • Depth: 168 mm (6.6 in.)
  • Weight: 310 g (10.9 oz)

Operating environment

The adapters are supported in the following environment:

  • Temperature (operating): 0 to 70 °C (32 to 158 °F)
  • Temperature (non-operating): -40 to 85 °C (-40 to 185 °F)
  • Relative humidity (non-operating): 5 to 95% (noncondensing)
  • Maximum altitude: 3,050 m (10,000 ft)
  • Shock, operating: 1,500 G (Max) at 0.5 ms
  • Vibration: 20 GPEAK (10-2000 Hz) at 15 mins per axis

Agency approvals

The adapters conform to the following regulations:

  • Safety:
    • cUL
    • CE
    • TUV-GS
    • CB
  • EMC:
    • CE (EU)
    • BSMI (Taiwan)
    • KC (South Korea)
    • VCCI (Japan)
    • RCM (Australia)
    • FCC (USA) / IC (Canada)

Related product families

Product families related to this document are the following:

Trademarks

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The following terms are trademarks of Lenovo in the United States, other countries, or both:
Lenovo®
ServerProven®
ThinkSystem

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