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Chapter 6: Technology Background
163
RAID 50 Axles
When you create a RAID 50, you must specify the number of axles. An axle
refers to a single RAID 5 logical drive that is striped with other RAID 5 logical
drives to make RAID 50. An axle can have from 3 to 16 physical drives,
depending on the number of physical drives in the logical drive.
The chart below shows RAID 50 logical drives with 6 to 16 physical drives, the
available number of axles, and the resulting distribution of physical drives on
each axle.
RAID 50 Logical Drive
No. of Drives No. of Axles Drives per Axle
623,3
723,4
824,4
924,5
33,3,3
10 2 5,5
33,3,4
11 2 5,6
33,4,4
12 2 6,6
34,4,4
4 3,3,3,3
13 2 6,7
34,4,5
4 3,3,3,4
14 2 7,7
34,5,5
4 3,3,4,4