Lenovo ThinkSystem SR645 - Specifications

Ethernet connection. If the applicable device drivers are installed, this switching occurs without data loss
and without user intervention.
• Redundant cooling and optional power capabilities
The server supports a maximum of two 1100-watt hot-swap power supplies and two dual-motor non hot-
swap fans, which provide redundancy for a typical configuration. The redundant cooling by the fans in the
server enables continued operation if one of the fans fails.
• ThinkSystem RAID support
The ThinkSystem RAID adapter provides hardware redundant array of independent disks (RAID) support
to create configurations. The standard RAID adapter provides RAID levels 0 and 1. An optional RAID
adapter is available for purchase.
• UEFI-compliant server firmware
Lenovo ThinkSystem firmware is Unified Extensible Firmware Interface (UEFI) 2.5 compliant. UEFI
replaces BIOS and defines a standard interface between the operating system, platform firmware, and
external devices.
Lenovo ThinkSystem servers are capable of booting UEFI-compliant operating systems, BIOS-based
operating systems, and BIOS-based adapters as well as UEFI-compliant adapters.
Note: The server does not support DOS (Disk Operating System).
Specifications
The following information is a summary of the features and specifications of the server. Depending on the
model, some features might not be available, or some specifications might not apply.
Table 1. Server specifications
Specification
Description
Dimension
• 1U
• Height: 43.0 mm (1.69 inches)
• Width:
– With rack latches: 481.7mm (18.96 inches)
– Without rack latches: 445 mm (17.52 inches)
• Depth: 771.8 mm (30.39 inches)
Note: The depth is measured with rack latches installed, but without security
bezel installed.
Package weight
Up to 20.23 kg (44.56 lb)
Processor
• Up to two AMD
®
EPYC
TM
processors
• Designed for Land Grid Array (LGA) 4094 (SP3) socket
• Scalable up to 128 cores
• Thermal Design Power (TDP): up to 280 watts
For a list of supported processors, see:
https://static.lenovo.com/us/en/serverproven/index.shtml
For technical rules for processors and heat sinks, see “Technical rules for processors
and heat sinks” on page 96
.
Chapter 1. Introduction 5