Lenovo ThinkSystem SR645 Setup Manual page 8

The server has an Open Compute Project (OCP) 3.0 slot for an OCP 3.0 Ethernet adapter, which provides
two or four network connectors for network support.
• Integrated Trusted Platform Module (TPM)
This integrated security chip performs cryptographic functions and stores private and public secure keys.
It provides the hardware support for the Trusted Computing Group (TCG) specification. You can
download the software to support the TCG specification.
Trusted Platform Module (TPM) of version 2.0 is supported.
For more information on TPM configurations, see "Enable TPM" in the Maintenance Manual.
Note: For customers in Chinese Mainland, a Lenovo-qualified TPM 2.0 adapter (sometimes called a
daughter card) may be pre-installed.
• Large system-memory capacity
The server supports up to 32 TruDDR4 registered DIMMs (RDIMMs) or three-dimensional stacking
registered DIMMs (3DS RDIMMs). For more about the specific types and maximum amount of memory,
see "Specifications" on page
• Large data-storage capacity and hot-swap capability
Depending on different models, the server supports up to four 3.5-inch or ten 2.5-inch SAS/SATA/NVMe
on the front, up to two M.2 drives, and up to two 2.5-inch SAS/SATA/NVMe or two 7mm drives on the
rear.
With the hot-swap feature, you can add, remove, or replace hard disk drives without turning off the server.
• Lenovo XClarity Controller (XCC)
The Lenovo XClarity Controller is the common management controller for Lenovo ThinkSystem server
hardware. It consolidates multiple management functions in a single chip on the server system board.
Some of the features that are unique to the Lenovo XClarity Controller are enhanced performance, higher-
resolution remote video, and expanded security options. For additional information about the Lenovo
XClarity Controller, see:
http://sysmgt.lenovofiles.com/help/topic/com.lenovo.systems.management.xcc.doc/product_page.html
• Light path diagnostics
Light path diagnostics provides LEDs to help you diagnose problems and an integrated LCD diagnostics
panel or external diagnostics handset can provide additional diagnostic information. For more information
about the light path diagnostics, see the following:
– "Drive LEDs" on page 25
– "Rear view LEDs" on page 43
– "Diagnostics panel" on page 27
– "LCD diagnostics panel/handset" on page 29
• Mobile access to Lenovo Service Information website
The server provides a QR code on the system service label, which is on the cover of the server, that you
can scan using a QR code reader and scanner with a mobile device to get quick access to the Lenovo
Service Information website. The Lenovo Service Information website provides additional information for
parts installation, replacement videos, and error codes for server support.
• Redundant networking connection
The Lenovo XClarity Controller provides failover capability to a redundant Ethernet connection with the
applicable application installed. If a problem occurs with the primary Ethernet connection, all Ethernet
traffic that is associated with the primary connection is automatically switched to the optional redundant
ThinkSystem SR645 Setup Guide
4
5.