Hardware options installation 34
Mirrored Memory population guidelines
For Mirrored Memory mode configurations, observe the following guidelines:
• Observe the general DIMM slot population guidelines (on page 33).
• Always install DIMMs in channels 1 and 2 for each installed processor.
• Do not install DIMMs in channel 3 for any processor.
• DIMMs installed on channel 1 and channel 2 of an installed processor must be identical.
• In multi-processor configurations, each processor must have a valid Mirrored Memory configuration.
• In multi-processor configurations, each processor may have a different valid Mirrored Memory
configuration.
Single-processor Mirrored Memory population order
For Mirrored Memory mode configurations with a single processor, populate the DIMM slots 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 Mirrored Memory support ("Configuring
mirrored memory" on page 61).
Multi-processor Mirrored Memory population order
For Mirrored 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 mirrored memory support ("Configuring
mirrored memory" on page 61).
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