1. Installing Internal Optional Devices
Express5800/B120f User's Guide
50
Chapter 2 Preparations
(1)
Memory Mirroring Feature
Memory Mirroring feature writes the same data into two groups of DIMMs (mirror set) between memory
channels (channels 2 and 3) to provide data redundancy.
Note
•
Memory Mirroring feature uses channels 2 and 3.
•
DIMMs used in mirror set must be of the same model number.
Example: 2-CPU configuration
Tips
The operating system only recognizes a half of the total physical capacity.
CH2
CPU1
Memory Controller
CPU1-DIMM4
CH3
CH1
CPU1-DIMM1
CPU1-DIMM2
CPU1-DIMM3
CPU1-DIMM5
CPU1-DIMM6
CH2
CPU2
1
Memory Controller
CPU2-DIMM4
CH3
CH1
CPU2-DIMM1
CPU2-DIMM2
CPU2-DIMM3
CPU2-DIMM5
CPU2-DIMM6
Mirror set #3
Mirror set #1
Mirror set #4
Mirror set #2
