Professional RAID Calculator
Calculate storage capacity, rebuild times, URE risk, and costs for RAID 0, 1, 1E, 10, 5, 50, 5E, 5EE, 6, and 60 configurations
Advanced Features
10 RAID Levels
Support for RAID 0, 1, 1E, 10, 5, 50, 5E, 5EE, 6, and 60 with accurate calculations for each configuration.
Mixed Drive Sizes
Intelligent handling of arrays with different drive capacities, automatically calculating based on minimum size.
Risk Analysis
Calculate URE probability, rebuild times, annual data loss risk, and get warnings for risky configurations.
NAS Presets
Quick configuration for popular Synology, QNAP, and custom NAS models with common bay counts.
Cost & Power
Analyze total cost, cost per TB, power consumption, and heat output for your array configuration.
Export & Share
Export calculations to CSV or share configurations via link for collaboration and documentation.
RAID Level Quick Reference
| RAID Level | Min Drives | Failure Tolerance | Best Use Case |
|---|---|---|---|
| RAID 0 | 2 | None | Maximum speed, non-critical data |
| RAID 1 | 2 | 1 drive | Critical data, 2-4 drives |
| RAID 5 | 3 | 1 drive | Balanced performance & capacity |
| RAID 6 | 4 | 2 drives | Large drives, mission critical |
| RAID 10 | 4 | 1 per mirror | High I/O, database servers |
| RAID 50 | 6 | 1 per group | Large arrays, high performance |
| RAID 60 | 8 | 2 per group | Enterprise, maximum protection |
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