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RAID 1
RAID 1 takes the data written on one disk and copies it to another, making a mirror or exact
copy. This arrangement does not have a significant performance advantage. If one disk fails,
there is no data loss. There is no rebuild, just a copy of the data to the disk.
Data Mirror
1
1
2
2
3
3
4
4
Disk Drives
WD ARRAY MANAGEMENT SETUP
USER MANUAL
APPENDIX A: RAID CONCEPTS - 57
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