RAID Capacity Calculator

This calculator computes RAID capacity characteristics for the most commonly used RAID types.

Provide the following parameters:

• RAID type,
• disk capacity,
• number of disks drives per RAID group,
• number of RAID groups (if your storage system consists of more than one RAID group of the same configuration),
• single disk cost (optional) - to calculate the total storage cost and the cost per TB of usable capacity.

To perform calculation, click Submit.

Supported RAID levels are:

• RAID 0 (block-level striping without parity or mirroring);
• RAID 1 (mirroring without parity or striping);
• RAID 1E (mirroring with striping);
• 3-Way Mirror or Triple Mirror (mirroring without parity or striping);
• RAID 3 (byte-level striping with a dedicated parity disk);
• RAID 4 (block-level striping with a dedicated parity disk);
• RAID 5 (block-level striping with distributed parity);
• RAID 5E (RAID 5 Enhanced) and RAID 5EE (RAID 5E Enhanced) (block-level striping with distributed parity and integrated active distributed hot-spare);
• RAID 6 (block-level striping with double distributed parity);
• RAID 10 (1+0) (striped mirrors - a combination of multiple RAID 1 groups with RAID 0);
• RAID 50 (combination of multiple RAID 5 groups with RAID 0);
• RAID 60 (combination of multiple RAID 6 groups with RAID 0);
• RAID-DP (stripe set with double parity and two dedicated parity disks);
• RAID-TEC (triple erasure encoding);
• RAID-Z1 (single parity with variable stripe width);
• RAID-Z2 (double parity with variable stripe width);
• RAID-Z3 (triple parity with variable stripe width).