Cisco UCS C240 M5 Service Manual

Replacing Memory DIMMs
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.
Caution
To ensure the best server performance, it is important that you are familiar with memory performance
guidelines and population rules before you install or replace DIMMs.
Note
DIMM Population Rules and Memory Performance Guidelines
This topic describes the rules and guidelines for maximum memory performance.
DIMM Slot Numbering
The following figure shows the numbering of the DIMM slots on the motherboard.
Figure 28: DIMM Slot Numbering
DIMM Population Rules
Observe the following guidelines when installing or replacing DIMMs for maximum performance:
•
Each CPU supports six memory channels.
◦
CPU 1 supports channels A, B, C, D, E, F.
◦
CPU 2 supports channels G, H, J, K, L, M.
Cisco UCS C240 M5 Server Installation and Service Guide
70
Maintaining the Server
Replacing Memory DIMMs

Cisco UCS C240 M5 Specifications

General

Brand	Cisco
Model	UCS C240 M5
Category	Server
Language	English