RAID capacity calculator
Calculate RAID capacity with explicit inputs, validation, and a documented formula.
RAID capacity calculator
Result12
How to use this tool
- Enter the known values.
- Select Calculate to process the inputs.
- Review the result, formula, and calculation steps.
Worked example
Follow this example to see the method in practice.
Formula
usable capacity and drive fault tolerance derive from RAID level, drive count, and smallest drive size
Frequently asked questions
Formula
The formula below shows how the result is calculated.
Important information
Results are estimates for general informational purposes. Check important decisions with an appropriate professional or primary source.