Chapter 1. Introduction
The ThinkSystem SR635 server is a 1U rack server designed for performance and expansion for various IT 
workloads. With the modular design, the server is flexible to be customized for maximum storage capacity or 
high storage density with selectable input/output options and tiered system management.
Performance, ease of use, reliability, and expansion capabilities were key considerations in the design of the 
server. These design features make it possible for you to customize the system hardware to meet your needs 
today and provide flexible expansion capabilities for the future.
The server comes with a limited warranty. For details about the warranty, see: 
https://support.lenovo.com/us/en/solutions/ht503310
For details about your specific warranty, see: 
http://datacentersupport.lenovo.com/warrantylookup
Identifying your server
When you contact Lenovo for help, the machine type and serial number information helps support 
technicians to identify your server and provide faster service.
The machine type and serial number are on the ID label on the right rack latch in the front of the server.
Figure 1. Location of the ID label
Quick response code
The system service label, which is on the top cover, provides a quick response (QR) code for mobile access 
to service information. Scan the QR code with a mobile device and a QR code reader application to get quick 
access to the Lenovo Service Web site for this server. The Lenovo Service Information Web site provides 
additional information for parts installation and replacement videos, and error codes for server support.
The following illustration shows the QR code: 
https://support.lenovo.com/p/servers/sr635
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