The server supports synchronous dynamic random-access memory (SDRAM) registered dual inline 
memory modules (DIMMs) with error correcting code (ECC). For more information about the specific types 
and maximum amount of memory, see 
“Specifications” on page 3.
•  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, when the software is available.  
Note: For customers in Chinese Mainland, integrated TPM is not supported. However, customers in 
Chinese Mainland can install a Trusted Cryptographic Module (TCM) adapter or a Lenovo-qualified TPM 
adapter (sometimes called a daughter card).
•  Large data-storage capacity and hot-swap capability 
The server models support the maximum of sixteen 2.5-inch hot-swap Serial Attached SCSI (SAS) or hot- 
swap Serial ATA (SATA) hard-disk drives, or maximum of eight 2.5-inch Non-volatile Memory express 
(NVMe) solid-state drives. 
With the hot-swap feature, you can add, remove, or replace hard disk drives without turning off the server.
•  Light path diagnostics 
Light path diagnostics provides LEDs to help you diagnose problems. For more information about the light 
path diagnostics, see 
“Front operator panel with LCD display” on page 17 and “Light path diagnostics” in 
ThinkSystem SR860 Maintenance Manual.
•  Mobile access to Lenovo Service Information website 
The server provides a QR code on the system service label, which is on the top 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 and 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 
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 750-watt, 1100-watt, 1600-watt or 2000-watt hot-swap power 
supplies and three 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. The 
server comes with one 750-watt, 1100-watt, 1600-watt or 2000-watt hot-swap power supply and three 
non hot-swap fans.  
Note: You cannot mix 750-watt, 1100-watt, 1600-watt or 2000-watt power supplies in the server.
•  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.
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.
Chapter 1. Introduction 3