Asus DSEB-DG SAS User Guide - Page 38

2.4.3 Memory mirroring and sparing technology The Intel® 5400 chipset supports the memory mirroring and sparing technology. Refer to the below sections: Memory Mirroring: When enabling memory mirroring function in the BIOS setting (please refer the section 4.4.2 Chipset Configuration and configure the option Memory Branch Mode as Branch Mirroring), Branch 1 contains a replicate copy of the data in Branch 0. The DIMMs must cover the same slot position on both branches. DIMMs that cover a slot position must be identical with respect to size, speed, and organization. DIMMs within a slot position must match each other, but aren't required to match adjacent slot positions. And the total memories size will be the half of all installed memories. The below two memory configurations were required to operate in mirrored mode. 1. Configuration 1 (Mirroring): Four memories population MCH DIMM 31 (Slot 1:Channel 3) DIMM 30 (Slot 0:Channel 3) DIMM 21 (Slot 1:Channel 2) DIMM 20 (Slot 0:Channel 2) DIMM 11 (Slot 1:Channel 1) DIMM 10 (Slot 0:Channel 1) DIMM 01 (Slot 1:Channel 0) DIMM 00 (Slot 0:Channel 0) DIMM 31 (Slot 1:Channel 3) DIMM 30 (Slot 0:Channel 3) DIMM 21 (Slot 1:Channel 2) DIMM 20 (Slot 0:Channel 2) DIMM 11 (Slot 1:Channel 1) DIMM 10 (Slot 0:Channel 1) DIMM 01 (Slot 1:Channel 0) DIMM 00 (Slot 0:Channel 0) Branch 0 Branch 1 (Mirror) 2. Configuration 2 (Mirroring) : Eight memories population MCH Branch 0 Branch 1 (Mirror) 2-18 Chapter 2: Hardware information