Hardware options installation 66
General DIMM slot population guidelines
Observe the following guidelines for all AMP modes:
• Install DIMMs only if the corresponding processor is installed.
• Do not mix LRDIMMs and RDIMMs.
• White DIMM slots denote the first slot of a channel (Ch 1-A, Ch 2-B, Ch 3-C, Ch 4-D).
• When only one processor is installed, install DIMMs in sequential alphabetic order: A, B, C, D, E, F,
and so forth.
• When two processors are installed, install the DIMMs in sequential alphabetical order balanced
between the two processors: P1-A, P2-A, P1-B, P2-B, P1-C, P2-C, and so forth.
• When single-rank, dual-rank, and quad-rank DIMMs are populated for two DIMMs per channel,
always populate the higher number rank DIMM first (starting from the farthest slot). For example, first
quad-rank DIMM, then dual-rank DIMM, and then lastly single-rank DIMM.
• DIMMs should be populated starting farthest from the processor on each channel.
For more information about server memory, see the Hewlett Packard Enterprise website
(http://www.hpe.com/info/memory).
The DIMM speeds supported in this server are listed in the following table:
Populated slots
Rank
Speeds supported
Single, dual or quad-rank
Single, dual or quad-rank
Advanced ECC population guidelines
For Advanced ECC mode configurations, observe the following guidelines:
• Observe the general DIMM slot population guidelines.
• DIMMs may be installed individually.
Installing a DIMM
1. If installed, remove the security bezel (on page 17).
2. Power down the server (on page 17).
3. Remove all power:
a. Disconnect each power cord from the power source.
b. Disconnect each power cord from the server.
4. Do one of the following:
o Extend the server from the rack (on page 18).
o Remove the server from the rack (on page 19).
5. Remove the access panel (on page 20).
6. Remove the air baffle (on page 24).
7. Open the DIMM slot latches.
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