Asus DSEB-D16 DSEB-D16 User's Manual for English Edition - Page 41

Memory Sparing At configuration 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 Configuration and configure the options of Branch 0 Rank Sparing or Branch 1 Rank Sparing to enable the memory sparing functions. The default BIOS setting is disabled. • 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. The following tables show memory configurations with Memory Sparing function in Branch 0. One DIMM per channel (two ranks) Branch0 Sparing Memory space Total Memory Channel 0 DIMM_00 (1024MB*2 Ranks) Rank 0 Rank 1 (1024 MB) (1024 MB) Channel 1 DIMM_10 (1024MB*2 Ranks) Rank 0 Rank 1 (1024 MB) (1024 MB) 1024 MB 1024 MB 2048 MB ASUS DSEB-D16 Series 2-21