HP ROM-Based Setup Utility - Manual (Page 163)

Advanced Memory Protection
The Advanced Memory Protection option provides additional memory protection beyond ECC.
For more information about Advanced Memory Protection, see HP ProLiant Advanced Technology
on the HP website (
http://h18004.www1.hp.com/products/servers/technology/
memoryprotection.html ).
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The Advanced ECC Support (maximum memory) setting disables additional resiliency and
provides the largest memory capacity to the OS.
•
The Online Spare with Advanced ECC Support setting requires a single group of spare modules
and provides automatic failover of degraded modules in the system while it is running.
•
The Mirrored Memory with Advanced ECC Support option provides protection against
uncorrectable memory errors that would otherwise result in system failure. DIMM banks A and
B are mirrored by DIMM banks C and D on the same memory board. The failed memory can
be replaced while the system is running.
Mirrored DIMM pairs must be the same size to allow selection of single-board mirrored memory
or dual-board mirrored memory. Pairing different size DIMMs results in the following caution:
Current memory configuration does not support Online Spare.
System Options menu 163