Intel® Server Board Set SE8500HW4 | System BIOS |
10.1.3Maximum Performance
The maximum performance mode is the default memory configuration and provides the best performance. With four Memory Boards installed, the BIOS will configure memory as
10.1.4Memory Mirroring
The mirror memory mode requires either two or four same size Memory Boards and provides redundancy at the cost of halving the effective memory size. The mirror configuration allows for the hot replacement of an existing board for a board containing an equal amount of memory or the hot addition of two Memory Boards to a pair of empty Memory Board slots only.
A pair of Memory Boards in memory mirror mode forms a redundant group. One of the Memory Boards is designated the primary image and the other the secondary image. For memory writes, the write request is issued to both boards. For memory reads, the read request is issued to the primary Memory Board. In the event of a detected correctable error, the primary image will toggle and the read will be issued to what was the old secondary image. In the event of a detected uncorrectable error, the primary and secondary images will switch with each other and the failed image cannot become the primary image again until the failed DIMMs have been replaced and the image
Supported Memory Board configurations for this mode are:
Memory Board A mirrored with Memory Board B, both of equal size
Memory Board C mirrored with Memory Board D, both of equal size
Memory Board A mirrored with Memory Board B, both of equal size; and Memory Board C mirrored with Memory Board D, both of equal size.
Memory Board hot replace is supported in the following way:
Memory Board A mirrored with Memory Board B, both of equal size. Remove Memory Board A or B and replace with an equal sized Memory Board
Memory Board C mirrored with Memory Board D, both of equal size. Remove Memory Board C or D and replace with an equal sized Memory Board
Memory Board hot add is supported in the following way:
Memory Board A and B previously installed with Memory Board slots C and D empty. Equal sized Memory Boards can be installed in slot C then D, one at a time.
Memory Board C and D previously installed with Memory Board slots A and B empty. Equal sized Memory Boards can be installed in slot A then B, one at a time.
10.1.5Memory RAID
The memory RAID mode requires four same size Memory Boards and provides redundancy at the cost of quartering (¼) the effective memory size. Memory RAID mode acts similar to the
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