Raid Calculator | Raid Disk Space Utilization Calculator | ServeTheHome

Have a bunch of disks and want to see what the usable capacity will be in RAID 1 versus RAID 60? ServeTheHome now provides a free RAID calculator. You can quickly see what the usable capacity is for a given configuration. This is currently a version 1 RAID calculator, where we simply calculate approximate array sizes. We will be adding features over time.

While you are here, consider reading up on the:
Anatomy of a Hardware RAID Controller
Differences between Hardware RAID, HBAs, and Software RAID
Wikipedia’s Great RAID Entry

All of these resources will be helpful when planning your next RAID array.

STH has a new RAID Reliability Calculator which can give you an idea of chances for data loss given a number of disks in different RAID levels. Check this one out next!

If you find this useful, share the calculator!

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If you would like to report a bug, or see new features added in the future, please use this RAID Calculator Forum Post to do so. Coming soon: adding MTTDL to the RAID calculations.