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Hardware options installation 46
• 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 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 Mirrored Memory support ("Configuring
mirrored memory" on page 87).
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 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 mirrored memory support ("Configuring
mirrored memory" on page 87).
Online Spare population guidelines
For Online Spare mode configurations, observe the following guidelines:
• Observe the general DIMM slot population guidelines (on page 43).
• DIMM configuration on each channel of a processor must be identical.