RAID CALCULATOR / HELP

RAID Calculator Manual

Estimate capacity for a standard RAID array with equal or mixed drive sizes.

Calculate capacity

1. Choose RAID 0, 1, 5, 6 or 10.
2. Enter your number of drives and choose TB or GB.
3. Enter a shared capacity, or choose “Enter each drive” for different sizes.
4. Select Calculate capacity. Review usable, redundancy and unused space.
5. Copy, download CSV or print the result if useful.

How estimates work

The calculator uses the smallest capacity for each disk, then applies the selected RAID formula. Different products may support different RAID layouts, minimums and system reservations. Check your device documentation.

Protect your files

RAID redundancy is not a backup. Keep separate, tested backups of important data.