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As with hot-plug mirrored memory, hot-plug RAID memory allows failed or
degraded DIMMs to be replaced while the server is running without requiring
server downtime. The memory board with the failed DIMMs can be removed,
failed DIMMs replaced, and the board re-inserted into the server without any
interruption to the operating system.
Hot-plug RAID memory is only supported if all four memory boards are
installed. No operating system support is required.
The following guidelines apply to hot-plug RAID memory:
•
All general memory requirements apply.
•
Hot-plug RAID memory is only supported with four memory boards.
•
All four memory boards must have the same amount of total memory.
However, each board can have different DIMM configurations as long as
they have equal total size. Any deviation from this rule results in the server
defaulting to Advanced ECC ("Advanced ECC memory" on page 97).
•
Hot-replace operations are supported.
•
If you remove a board while the server is running and do not replace it, the
server defaults to Advanced ECC on the next reboot.
Memory Boards and DIMMs
Memory board and DIMM installation, removal, and replacement procedures can
be either hot-plug or non-hot-plug procedures, depending on how the server is
configured. Hot-plug operations can be hot-add or hot-replace. Hot-add makes
additional memory resources available to the operating system. Hot-replace
allows failed or degraded DIMMs to be replaced while the server is running.
Hot-add is only supported with Microsoft® Windows® 2003 or later. Hot-
replace has no operating system requirements.
The following table illustrates what AMP mode supports hot-plug features.
Advanced Memory
Protection Mode
Advanced ECC
Hot-
Hot-Add
Replace
Supported
Supported
X
Memory options
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