Promise Technology 2-Year Extended Warranty for VessR2000 RAID Head - Manual (Page 601)

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Vess R2000 Series Product Manual Promise Technologies
RAID 6
A RAID 6 source logical drive can migrate to the following target logical drives:
Target Requirements
RAID 6
Add physical drives. 32 maximum.
RAID 60
8 physical drives minimum, 32 per axle maximum.
If existing physical drives have no unused space, add 1 or more physical
drives.