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Installing or Replacing Server Components
Replacing DIMMs
This section includes the following topics:
•
•
Caution
DIMMs and their sockets are fragile and must be handled with care to avoid damage during installation.
Caution
Cisco does not support third-party DIMMs. Using non-Cisco DIMMs in the server might result in system
problems or damage to the motherboard.
To ensure the best server performance, it is important that you are familiar with memory performance
Note
guidelines and population rules before you install or replace the memory.
Memory Performance Guidelines and Population Rules
This section describes the type of memory that the server requires and its effect on performance. The
section includes the following topics:
•
•
•
•
Cisco UCS C240 M4 Server Installation and Service Guide
3-20
Memory Performance Guidelines and Population Rules, page 3-20
DIMM Replacement Procedure, page 3-23
DIMM Socket Numbering, page 3-21
DIMM Population Rules, page 3-21
Memory Mirroring and RAS, page 3-22
Lockstep Channel Mode, page 3-22
Chapter 3
Maintaining the Server
OL-32474-01
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