Memory Sparing - Acer Altos R510 User Manual

Memory Sparing

To provide a more fault tolerant system, the Altos R510 includes
specialized hardware to support fail-over to a spare DIMM device in
the event that a primary DIMM in use exceeds a specified threshold of
runtime errors. One of the DIMMs installed per channel will not be
used, but kept in reserve. In the event of significant failures in a
particular DIMM, it and its corresponding partner in the other channel
(if applicable), will, over time, have its data copied over to the spare
DIMM(s) held in reserve, When all the data has been copied, the
reserve DIMM(s) will be put into service and the failing DIMM will be
removed from service. Only one sparing cycle is supported. If this
feature is not enabled, then all DIMMs will be visible in normal address
space.
Please refer to the "Memory Configuration" section in "BIOS Setup" to
enable the memory sparing feature.
The table below lists the suggested memory population for memory
sparing.
DIMM DIMM
1B 1A
512MB 512MB
1GB 1GB
2GB 2GB
512MB 512MB
DIMM DIMM DIMM
2B 2A 3A
512MB 512MB
(spare) (spare)
1GB 1GB
(spare) (spare)
2GB 2GB
(spare) (spare)
512MB 512MB 512MB
(spare)
Total Memory
DIMM
3B
Physical
Memory
2GB
4GB
8GB
512MB 3GB
(spare)
89
Detected
by OS
1GB
2GB
4GB
2GB