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