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Hardware options installation 52
• Observe the general DIMM slot population guidelines (on page 50).
• DIMM configuration on each channel of a processor must be identical.
• Each processor must have a valid Online Spare configuration.
• In multi-processor configurations, each processor can have a different valid Online Spare
configuration.
Installing a DIMM
CAUTION: To avoid damage to the hard drives, memory, and other system components, the air
baffle, drive blanks, and access panel must be installed when the server is powered up.
1. Power down the server (on page 22).
2. Do one of the following:
o Open or remove the tower bezel, as needed ("Open or remove the tower bezel" on page 22).
o Extend the server from the rack (on page 24).
3. Remove the access panel (on page 25).
4. Remove fan 5 (on page 26).
5. If installed, remove the BBWC battery pack or the FBWC capacitor pack (on page 27).
6. Remove the air baffle (on page 28).
7. Open the DIMM slot latches.
8. Install the DIMM.
9. Install the air baffle.
10. If removed, install the BBWC battery pack or the FBWC capacitor pack ("Installing the BBWC battery
pack or the FBWC capacitor pack" on page 86).
11. Install fan 5.
12. Install the access panel.
If you are installing DIMMs in lock-step configuration, configure this mode in RBSU ("HP ROM-Based Setup
Utility" on page 116).