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ASUS DSEB-D16 Series 2-21
• Each branch contains its own sparing engine and can be enabled or
disabled separately.
• This motherboard does not support rank sparing across branches.
• This motherboard does not support rank sparing when in mirror mode.
• The DIMM rank with the largest size will be assigned as spare rank. Data
can only be copied from a smaller sized rank to a larger sized one.
• A DIMM can contain only one or two ranks. To support sparing function, a
DIMM channel should contain at least two ranks.
• When sparing function is enabled, the usable memory size will reduce the
size of the spare ranks.
Memory Sparing
At conguration time, a DIMM rank is set aside to replace a defective DIMM rank.
When the error rate for a failing DIMM rank reaches a pre-determined threshold,
the memory sparing function will issue an interrupt and initiate a spare copy. At the
completion of the copy, the failing DIMM rank is disabled and the “spared” DIMM
rank will be used in its place. Refer to section
4.4.2 Chipset Conguration
and
congure the options of
Branch 0 Rank Sparing
or
Branch 1 Rank Sparing
to
enable the memory sparing functions. The default BIOS setting is disabled.
The following tables show memory congurations with Memory Sparing function in
Branch 0.
One DIMM per channel (two ranks)
Branch0
Channel 0 Channel 1
DIMM_00
(1024MB*2 Ranks)
DIMM_10
(1024MB*2 Ranks)
Rank 0
(1024 MB)
Rank 1
(1024 MB)
Rank 0
(1024 MB)
Rank 1
(1024 MB)
Sparing
Memory space
1024 MB 1024 MB
Total Memory
2048 MB