Hardware options installation 34
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 Do not populate slots C or F.
• UDIMM
o First: A and B
o Last: D and E
o Do not populate slots C or F.
After installing the DIMMs, use RBSU to configure the system for Lockstep memory support.
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 ("Power down the server blade" on page 12).
2. Remove the server blade (on page 13).
3. Remove the access panel (on page 14).
4. Remove all DIMM baffles ("Remove the DIMM baffle" on page 14).
5. Open the DIMM slot latches.
6. Install the DIMM.
7. Install all DIMM baffles.
8. Install the access panel (on page 14).
If you are installing DIMMs in a mirrored or lock-step configuration, configure this mode in RBSU ("HP
ROM-Based Setup Utility" on page 55).
