To calculate RAID usable capacity, enter the number of disks to be used, the size (in gigabytes) of each drive and a RAID level. Then, click the Calculate Usable RAID Capacity button.
RAID Drive Requirements
RAID 0 requires 2 drives or more
RAID 1 requires an even number of at least 2 drives
RAID 5 requires 3 drives or more
RAID 6 requires 4 drives or more
RAID 10 requires an even number of at least 4 drives