RAID Calculator
Estimate usable capacity, fault tolerance, efficiency, performance, and more for common RAID levels. Assumes all disks are the same size.
Usable Capacity
Fault Tolerance
Minimum Disks Required
Efficiency Usable / Total Raw
Storage Allocation
Performance
Advantages
Disadvantages
Disclaimer: Calculations are estimates assuming all drives are identical. 1 TB = 1000 GB used for calculation. Performance/Adv/Disadv are general summaries. Disk Type (HDD/SSD) selection is informational and does not affect capacity results shown here.