RAID 6 Calculator
Two disks' worth of parity. The usual choice for large arrays of big disks. Enter your disks below to see the usable space.
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RAID Level
Enter the number of disks and their size.
Disk Space & RAID Calculator
RAID 6 at a glance
Minimum Disks4
Usable With 6 Disks4 of 6 disks
Survives2 disks
Example (6 × 8 TB)32 TB usable
Two disks' worth of parity. The usual choice for large arrays of big disks.
RAID Levels and Units
Questions
How much usable space does RAID 6 give?
With n equal disks: n − 2 disks. 6 × 8 TB gives 32 TB.
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