User`s guide

A-13
Storage Concepts
Stripe Set of Mirror Sets (RAID 0/1)
Multilevel arrays or hybrid arrays are arrays that contain other
arrays. A stripe set of mirror sets, also known as RAID 0/1, is an
multilevel array made up of two or more equal-sized mirror sets.
The data in a stripe set of mirror sets is redundant. The mirrored
layers of this array enhance data availability by protecting against
loss due to member disk drive failure. The striped layers improve
performance.
Figure A-7 represents a stripe set of mirror sets created from three
equal-sized mirror sets (A, B, and C) and striped across six drives
the three mirror sets. Each mirror set is made up of two partitions
on two separate disk drives. The free space of the larger drive is not
used.
Figure A-7 Stripe set of mirror sets
Partition B(R)*
Partition A
Partition A(R)*
Partition C
Partition C(R)*
Mirror Set A
4 GB
*(R) = Redundant
12 GB
Stripe Set of Mirror Sets
Chunks
Chunks 1,4,7...
Mirror Set B
4 GB
Chunks 2,5,8...
Drive 1
Partition B
Drive 2 Drive 3
Drive 4
Drive 5
Drive 6
1,2,3,4,5,6,7,8,9...
4 GB
4 GB
4 GB
4 GB 4 GB
4 GB
Free Space
Mirror Set C
4 GB
Chunks 3,6,9...