Estimating disk array capacities

The capacity of a disk array depends on the capacity of the advanced function disks used and the RAID level of the array.

1. For RAID 0, multiply the number of disks by the disk capacity.
2. For RAID 5, multiply one fewer than the number of disks by the disk capacity.
3. For RAID 6, multiply two fewer than the number of disks by the disk capacity.
4. For 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.
   • SAS RAID controllers support up to 18 member disks in each RAID array.