Adaptec DuraStor 7220SS User Manual page 112

A stripe set distributes the data among the partitions in a way that
optimizes access speed (performance). By making a single request
for the amount of data in a stripe, an application can get all of the
array's member disk drives to work for it simultaneously, thus
optimizing large sequential access speed or concurrent access for
multiple small I/O requests. When used with small stripe sizes
(compared to average I/O request size), it can improve single-
stream data transfer rate. When used with large stripe size
(compared to average I/O request size), it can improve I/O request
rate.
Figure A-4 depicts a stripe set made up of three partitions on three
separate disk drives. The free space of the larger drive is not used.
Partition A1
4 GB
Chunks 1,4,7...
Figure A-4 A stripe set made up of the partitions, each on three different
disk drives
Drive 1
Partition A2
4 GB
Chunks 2,5,8...
Stripe Set A
12 GB
Chunks 1,2,3,
4,5,6,7,8,9...
Drive 2
Free Space (2 GB)
Partition A3
4 GB
Chunks 3,6,9...
Storage Concepts
Drive 3
A-9