Acer Altos R510 manual Memory Sparing, Dimm

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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.

						Total Memory
DIMM	DIMM	DIMM	DIMM	DIMM	DIMM
1B	1A	2B	2A	3A	3B	Physical	Detected
						Memory	by OS
512MB	512MB	512MB	512MB			2GB	1GB
		(spare)	(spare)
1GB	1GB	1GB	1GB			4GB	2GB
		(spare)	(spare)
2GB	2GB	2GB	2GB			8GB	4GB
		(spare)	(spare)
512MB	512MB	512MB	512MB	512MB	512MB 3GB		2GB
				(spare)	(spare)