Hitachi 8450H/R User Manual
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Ch 3: Installing Optional Devices
52
Hitachi PC VisionBase 8450H/R Server
RAID1
Data is stored into two hard disks, a data disk and a mirrored disk, in the same way.
Number of hard disks required: 2 (fixed)
Advantage:
100% data redundancy is ensured. Even if one of the two hard disks fails, it will be switched to the other hard
disk to continue read/write operation.
Disadvantages:
The hard disk capacity required doubles, because a mirrored disk with the same capacity is required.
A read/write operation during data rebuilding will result in lower performance.