RAID CALCULATOR

Use this RAID calculator to determine how much usable disk space you get with any number of disk drives in various RAID configurations. Input your total number of disks and your total drive capacity below to show total array size and the total usable disk space in GB.

note: 1TB = 1024GB

Number of Disks:

 

Drive Capacity (GB):

 

RAID level:

Raid 0 - Disk Striping -   (Minimum 2 Disks)
Raid 1 - Disk Mirroring -   (Minimum 2 Disks)
Raid 5 - Disk Striping with Parity -   (Minimum 3 Disks)
Raid 6 - Dual Disk Striping -   (Minimum 4 Disks)
Raid 10 - Striping & Mirroring -   (Minimum 4 Disks)
Raid 50 - Striping with Distributed Parity -   Raid 5+0 (Minimum 6 Disks)
Raid 60 - Striping with Distributed Double Parity -   Raid 6+0 (Minimum 8 Disks)

Results:

Total Array Size (GB):

Total Useable disk space (GB):