These guidelines will help you calculate the capacity of
a disk array.
The capacity of a disk array depends on the capacity of the disks
used and the RAID level of the array. To calculate the capacity of
a disk array, do the following:
- RAID 0
- Multiply the number of disks by the disk capacity.
- RAID 5
- Multiply one fewer than the number of disks by the disk capacity.
- RAID 6
- Multiply two fewer than the number of disks by the disk capacity.
- RAID 10
- Multiply the number of disks by the disk capacity and divide by
2.
Note: If disks of different capacities are used in the same array,
all disks are treated as if they have the capacity of the smallest
disk.
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