Hardware options installation 66
• Each channel can have a different valid online spare configuration.
• Each populated channel must have a spare rank:
o A single dual-rank DIMM is not a valid configuration.
o LRDIMMs are treated as dual-rank DIMMs.
Installing a DIMM
1. Power down the server (on page 20).
2. Remove all power:
a. Disconnect each power cord from the power source.
b. Disconnect each power cord from the server.
3. Do one of the following:
o Extend the server from the rack (on page 20).
o Remove the server from the rack (on page 22).
4. Remove the access panel (on page 23).
5. Remove the air baffle (on page 24).
6. Open the DIMM slot latches.
7. Install the DIMM.
8. Install the air baffle (on page 24).
9. Install the access panel (on page 23).
10. Install the server into the rack ("Installing the server into the rack" on page 33).
11. Power up the server (on page 20).
After installing the DIMMs, use RBSU ("HP ROM-Based Setup Utility" on page 108) to configure the memory
protection mode.