Promise Technology Pegasus32 R6 - Page 245

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Technology BackgroundPegasus32 Product Manual
Transitionhappensmanuallywhenyouspecifyadifferentunconguredphysicaldrivetotransition
(move) the data from the revertible spare drive.
See the example on the following pages.
Example
Following is an example to explain the Transition function.
In the example above, there is a four-drive RAID 5 disk array and a global spare drive. Physical drives
1,2,3,and4belongtothediskarray.Physicaldrive5remainsuncongured.Physicaldrive6isa
revertible spare drive.
If a physical drive fails in a disk array and there is a spare drive of adequate capacity available, the
controller automatically rebuilds the array using the spare drive. In this example, physical drive 3 failed
and the array is rebuilt using physical drive 6, the revertible spare drive.