Hardware options installation 47
FBDIMM installation guidelines
Always observe the following guidelines when installing additional memory:
• Always install memory in pairs of equal capacity.
• Install FBDIMMs into both slots within a single bank.
• Always install memory in pairs in sequential bank order, starting with bank A.
• Install supported DDR2 FBDIMMs.
• For maximum performance, install a minimum of four FBDIMMs across both memory boards (two
FBDIMMs per board).
For online spare and mirrored memory support, always observe additional guidelines ("Online spare
memory" on page 43).
Removing FBDIMMs
To remove the component:
1. Power down the server (on page 20).
2. Do one of the following:
• Open or remove the tower bezel, as needed ("Open or remove the tower bezel" on page 21).
• Extend the server from the rack (on page 22).
3. Remove the access panel (on page 25).
4. Remove the processor air baffle (on page 26).
5. Remove a memory board ("Removing and installing a memory board" on page 45).
6. Open the FBDIMM slot latches.
7. Remove the FBDIMM.
8. Install the memory board ("Removing and installing a memory board" on page 45).
9. Install the processor air baffle.
10. Install the access panel.
11. Do one of the following:
• Close or install the tower bezel, as needed.
• Slide the server back into the rack.
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