Acer Altos R710 manual Memory Sparing, Memory Mirroring

74 4 Configuring the system

Memory sparing and mirroring configuration cannot be used simultaneously.

Memory Sparing

To provide a more fault tolerant system, Altos R710 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 spareDIMM(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.

Refer to "Memory Configuration Sub-menu Selections" on page 103 for more information about configuring the memory spare or mirror parameter in the BIOS Setup utility.

Below table lists the suggested memory population for memory sparing:

Memory Mirroring

The Memory Mirroring feature designates a channel, two DDR2 DIMM slots, as spare memory and all system memory are sent to both mirrors by the Intel E7520 MCH chipset. When an uncorrectable error occurs