Hardware options installation 51
o
Do not populate slots C, F, or I.
• UDIMM
o First: A and B
o Last: D and E
o Do not populate slots C, F, G, H, or I.
After installing the DIMMs, use RBSU to configure the system for Lockstep memory support ("Configuring
lockstep memory" on page 94).
Multi-processor Lockstep population order
For Lockstep memory mode configurations with multiple processors, populate the DIMM slots for each
processor in the following order:
• RDIMM
o First: A and B
o Next: D and E
o Last: G and H
o Do not populate slots C, F, or I.
• UDIMM
o First: A and B
o Last: D and E
o Do not populate slots C, F, G, H, or I.
After installing the DIMMs, use RBSU to configure the system for Lockstep memory support ("Configuring
lockstep memory" on page 94).
Installing DIMMs
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 24).
2. Do one of the following:
o Open or remove the tower bezel, as needed ("Open or remove the tower bezel" on page 25).
o Extend the server from the rack (on page 24).
3. Remove the access panel (on page 26).
4. Remove the large redundant fan air baffle, if installed ("Remove the large redundant fan air baffle" on
page 27).
5. Remove the DIMM baffle, if installed ("Remove the DIMM baffle" on page 28).
6. Remove a fan, if necessary.
7. Open the DIMM slot latches.
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