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Overview 17
RAID 10
RAID 10 requires two or more mirrored sets working together. Multiple
RAID 1 sets are combined to form a single array. Data is striped across all
mirrored drives. Since each drive is mirrored in RAID 10, no delay is
encountered because no parity calculation is done. This RAID strategy can
tolerate the loss of multiple drives as long as two drives of the same mirrored
pair do not fail. RAID 10 volumes provide high data throughput and
complete data redundancy.
Figure 2-4. Example of RAID 10
stripe element 1
stripe element 3
stripe element 5
stripe element 1 duplicated
stripe element 3 duplicated
stripe element 5 duplicated
stripe element 7 stripe element 7 duplicated
stripe element 2
stripe element 4
stripe element 6
stripe element 2 duplicated
stripe element 4 duplicated
stripe element 6 duplicated
stripe element 8 stripe element 8 duplicated
PERC H200.book Page 17 Tuesday, July 13, 2010 4:15 PM