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Hardware options installation 27
• In multi-processor configurations, each processor may have a different valid Lockstep Memory
configuration.
Multi-processor Lockstep population order
For Lockstep memory mode configurations with multiple processors, populate DIMM slots A and B for
each processor. Do not populate slot C.
After installing the DIMMs, use RBSU to configure the system for Lockstep memory support ("Configuring
lockstep memory" on page 40).
Installing a DIMM
WARNING: To reduce the risk of personal injury from hot surfaces, allow the drives and the
internal system components to cool before touching them.
To install the component:
1. Power down the server blade (on page 11).
2. Remove the server blade (on page 12).
3. Access the internal server components (on page 12).
4. Open the DIMM slot latches.
5. Install the DIMM.
6. Install the server B assembly (on page 13).
7. Install the server blade ("Installing a server blade" on page 16).
If you are installing DIMMs in mirrored or lock-step configuration, configure this mode in RBSU ("HP ROM-
Based Setup Utility" on page 37).
Mezzanine card option
Optional mezzanine cards are classified as Type I mezzanine cards and Type II mezzanine cards. The
server blade supports only Type I mezzanine cards.