---
title: "RAID Calculator - Free Tool | Bit Refinery"
url: "https://bitrefinery.com/tools/raid-calculator"
description: "Calculate usable capacity, fault tolerance, and performance characteristics for RAID 0, 1, 5, 6, and 10 configurations."
lastmod: "2026-08-01"
source: "auto-generated from SSG HTML"
---

# RAID Calculator

Data & Storage

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

### Disk Configuration

Number of Disks

Total raw capacity: **24.0 TB**

Disk Size (each)

### Quick Comparison

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.