RAID Calculator

Data & Storage

Calculate usable capacity, fault tolerance, and performance characteristics for RAID 0, 1, 5, 6, and 10 configurations.

Number of Disks

Total raw capacity: 24.0 TB

Disk Size (each)

Level	Usable	Overhead	Fault Tolerance	Min Disks
RAID 0	24.0 TB	0%	None — any disk failure = total data loss	2
RAID 1	4.0 TB	83%	Can lose all but 1 disk	2
RAID 5	20.0 TB	17%	Can lose 1 disk	3
RAID 6	16.0 TB	33%	Can lose 2 disks simultaneously	4
RAID 10	12.0 TB	50%	Can lose 1 disk per mirror pair	4

RAID calculations assume identical disk sizes. Actual usable capacity may be slightly less due to filesystem overhead and metadata.