Lenovo ThinkSystem SR645 V3

Lenovo's 2-socket 1U rack server (machine types 7D9C/7D9D) for 4th and 5th Gen AMD EPYC processors up to 160 cores per socket and 400 W, with 24 DDR5 DIMM slots (up to 6 TB), up to 12 x 2.5" or 4 x 3.5" drives, up to 5 PCIe slots plus a dedicated OCP 3.0 slot, and up to 5 single-wide GPUs. A dense, high-core-count general-purpose server for virtualization, cloud and HPC; also runs with a single processor installed.

Memory

Slots

24 DIMM (12 per CPU, 1 DIMM per channel, 12 channels per CPU); 12 DIMM slots active with one CPU

Max

6 TB (24 x 256 GB 3DS RDIMM, 2 CPUs)

Types

Lenovo TruDDR5 RDIMM, 3DS RDIMM, 9x4 RDIMM; no UDIMM or LRDIMM

Speed

6400 MT/s or 6000 MT/s with 5th Gen EPYC 9005 (DIMM-dependent); 4800 MT/s with 4th Gen EPYC 9004; runs at the lower of the CPU's memory bus speed or the DIMM's rated speed

Protection

ECC, Bounded Fault, SDDC (x4 DIMMs), 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

Persistent memory

Not supported

Storage

Front 2.5"

2 x hot-swap NVMe, 4 x hot-swap SAS/SATA/AnyBay/NVMe, 8 x hot-swap SAS/SATA, or 10 x hot-swap SAS/SATA, AnyBay or NVMe (combinations)

Front 3.5"

4 x hot-swap SAS/SATA/AnyBay, or 2 x SAS/SATA + 2 x NVMe

Rear 2.5"

2 x hot-swap SAS/SATA, 2 x hot-swap NVMe, 2 x 7mm hot-swap SATA, or 2 x 7mm hot-swap NVMe (used with 2.5" front bays)

EDSFF

Up to 16 x E1.S hot-swap NVMe (front)

M.2

Internal module for up to 2 M.2 NVMe/SATA drives (OS boot)

Onboard

Onboard NVMe (no RAID), 12 drives each x4; onboard SATA (no RAID), 12 drives; NVMe retimer adapter available

RAID / HBA

12 Gb SAS/SATA RAID adapters, 8/16/32-port, up to 8 GB flash-backed cache, PCIe 3.0/4.0 host interface; 12 Gb SAS/SATA HBA (non-RAID) 8-port/16-port; CFF (cabled) form factor available so RAID/HBA doesn't consume a PCIe slot

Max NVMe

12 x 2.5" NVMe, all with direct (non-oversubscribed) connections

Max capacity

1,474.56 TB (12 x 122.88 TB 2.5" NVMe SSD); 368.64 TB (12 x 30.72 TB SAS SSD); 96 TB (4 x 24 TB 3.5" SAS/SATA HDD); 122.88 TB (16 x 7.68 TB E1.S NVMe)

Optical / tape

No internal optical or tape drive bays

Graphics

Onboard

Embedded 2D graphics in XClarity Controller 2, 16 MB, max 1920x1200 32bpp at 60 Hz

GPU support

Up to 5 x single-wide GPUs

Expansion

Rear slots

Up to 3 x PCIe x16 low-profile (2 x Gen5, 1 x Gen4), or 1 x PCIe x16 full-height half-length + 1 x PCIe x16 low-profile, or 1-2 x low-profile combined with rear 2.5"/7mm drive bays; Slot 3 requires two processors

Front slots

1 x PCIe x16 or x8 full-height half-length + 1 x PCIe x8 low-profile, or the front OCP slot (mutually exclusive with rear OCP); not all front slots available with one processor

OCP 3.0

1 x dedicated OCP 3.0 SFF slot, PCIe 5.0 x16 rear-accessible or PCIe 4.0 x16 front-accessible; one port can be shared with XCC2 for Wake-on-LAN/NC-SI

CFF

Dedicated cabled (CFF) bay for a RAID/HBA adapter that does not use a PCIe slot (2.5" front configurations only)

Networking

OCP 3.0 adapters

2-port and 4-port options with 1GbE, 10GbE and 25GbE connectivity

Management

1 x dedicated 1GbE RJ-45 XCC2 port; optional 2nd XCC2 port installs in the OCP slot

Power

PSU options

500 W, 750 W, 1100 W and 1800 W AC (80 PLUS Platinum or Titanium, 220 V AC; 500/750/1100 W also support 110 V); 1100 W -48 V DC; 240 V DC support in China only

Redundancy

Up to 2 hot-swap redundant PSUs; one fan integrated in each PSU

Input voltage

100-127 V AC or 200-240 V AC, 50/60 Hz; 180-300 V DC (China only); -48 to -60 V DC (DC PSU)

Cooling

Up to 8 x N+1 redundant hot-swap 40 mm fans (configuration dependent); optional closed-loop liquid-cooled heatsink or Neptune Core open-loop water cooling for high-TDP CPUs

Ports

Front

1 x USB 3.2 Gen 1 (5 Gb/s), 1 x USB 2.0 (XCC local management), external diagnostics port, optional VGA

Rear

3 x USB 3.2 Gen 1 (5 Gb/s), 1 x VGA, 1 x RJ-45 1 GbE XCC2 management port; optional 2nd XCC2 port (OCP slot); optional DB-9 serial port (slot 3)

Internal

1 x USB 3.2 Gen 1 for OS/license key purposes

Physical

Form factor

1U rack

Dimensions

440 mm W x 43 mm H x 773 mm D (17.3 x 1.7 x 30.4 in), excluding EIA flanges, bezel and PSU handles

Detailed depth

724 mm to rearmost I/O port; 754 mm to PSU handle (<=1100 W PSU) or 782 mm (1800 W PSU)

Weight

20.2 kg (44.6 lb) maximum

Machine types

7D9C (3-year warranty), 7D9D (1-year warranty)

Environment

ASHRAE A2 (most configs); A3/A4/H1 depending on configuration

Management

BMC

XClarity Controller 2 (XCC2, ASPEED AST2600); optional XCC Platinum adds remote control features

Local

Operator panel with status LEDs; optional External Diagnostics Handset with LCD; optional Integrated Diagnostics Panel (8 x 2.5" front bay models); optional front LCD panel

Tools

XClarity One, XClarity Integrator plugins, XClarity Energy Manager

Security

Chassis intrusion switch, power-on and administrator passwords, Root of Trust module with TPM 2.0 and Platform Firmware Resiliency (PFR); optional Nationz TPM 2.0 (China); optional lockable front security bezel

Warranty

3-year (7D9C) or 1-year (7D9D) customer-replaceable-unit and onsite limited warranty, 9x5 next business day; optional service upgrades

Operating systems

Windows

Windows Server; Windows 10 and 11 (subset of adapters/drives)

Red Hat

Red Hat Enterprise Linux (version support depends on processor generation; see the Operating system support section)

SUSE

SUSE Linux Enterprise Server (version support depends on processor generation)

Ubuntu

Ubuntu Server LTS releases

VMware

VMware ESXi (version support depends on processor generation)

Processors

• AMD EPYC 9015
• AMD EPYC 9115
• AMD EPYC 9135
• AMD EPYC 9175F
• AMD EPYC 9255
• AMD EPYC 9275F
• AMD EPYC 9335
• AMD EPYC 9355
• AMD EPYC 9355P
• AMD EPYC 9365
• AMD EPYC 9375F
• AMD EPYC 9455
• AMD EPYC 9455P
• AMD EPYC 9475F
• AMD EPYC 9535
• AMD EPYC 9555
• AMD EPYC 9555P
• AMD EPYC 9565
• AMD EPYC 9575F
• AMD EPYC 9655
• AMD EPYC 9655P
• AMD EPYC 9645
• AMD EPYC 9745
• AMD EPYC 9825
• AMD EPYC 9845
• AMD EPYC 9124
• AMD EPYC 9174F
• AMD EPYC 9224
• AMD EPYC 9254
• AMD EPYC 9274F
• AMD EPYC 9334
• AMD EPYC 9354
• AMD EPYC 9354P
• AMD EPYC 9374F
• AMD EPYC 9454
• AMD EPYC 9454P
• AMD EPYC 9474F
• AMD EPYC 9534
• AMD EPYC 9554
• AMD EPYC 9634
• AMD EPYC 9654
• AMD EPYC 9184X
• AMD EPYC 9384X
• AMD EPYC 9684X
• AMD EPYC 9734
• AMD EPYC 9754