Asus DSBF-DM SAS User Manual - Page 38
Memory mirroring and sparing technology, Memory Mirroring
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2.4.3 Memory mirroring and sparing technology The Intel® 5000P chipset supports the memory mirroring and sparing technology. Refer to the below sections: Memory Mirroring When enabling memory mirroring function in the BIOS setting (refer to section 4.4.2 Chipset Configuration and configure the option Memory Branch Mode as Mirror), 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 are not required to match adjacent slot positions. The total memories size will be the half of all installed memories. The below memory configurations were required to operate in mirrored mode. Configuration 1 (Mirroring): Four memories population (two onboard memory included) 1 GB 667 FB-DIMMs are installed in the following slots: DIMM_20, DIMM_30. Branch 1 (Mirror) Branch 0 DIMM_20 DIMM_21 DIMM_30 DIMM_31 MCH DIMM_11 Onboard Memory DIMM_01 Onboard Memory Slot 0 Slot 0 Slot 0 Slot 1 Slot 0 Slot 1 Ch:3 Ch:2 Ch:0 Ch:1 2-18 Chapter 2: Hardware information