Adaptec 3210S User Guide - Page 129
Stripe Set of Mirror Sets (RAID 0/1), The free space of the larger drive is not used.
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Storage Concepts Stripe Set of Mirror Sets (RAID 0/1) RAID technology allows you to create arrays that contain other arrays. (Also known as multilevel arrays.) A stripe set of mirror sets is an array made up of two or more equal-sized mirror sets. The data in a stripe set of mirror sets is redundant. 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. Each mirror set is made up of two partitions on two separate drives. The free space of the larger drive is not used. Stripe Set of Mirror Sets 12 GB Chunks 1,2,3,4,5,6,7,8,9... Mirror Set A 4 GB Chunks 1,4,7... Mirror Set B 4 GB Chunks 2,5,8... Mirror Set C 4 GB Chunks 3,6,9... Drive 1 Drive 2 Drive 3 Drive 4 Drive 5 Drive 6 Free Space Partition A Partition A(R)* Partition B Partition B(R)* Partition C Partition C(R)* 4 GB 4 GB 4 GB 4 GB 4 GB 4 GB *(R) = Redundant Figure A-7. Stripe set of mirror sets The stripe set of mirror sets is the top-level array, and mirror sets A, B, and C are the underlying arrays. Other types of multilevel arrays exist, though the stripe set of mirror sets offers the best balance of performance and redundancy of all the multilevel array types. A-11