Calculate usable space, efficiency and fault tolerance for RAID 0/1/5/6/10/50/60 and JBOD. Compare all levels instantly.
| RAID Level | Usable Space | Efficiency | Fault Tolerance | Min Drives | Read | Write |
|---|
⚠ During rebuild, a second drive failure will cause data loss on RAID 5. RAID 6 can survive one additional failure.
| Level | Space | Redundancy | Performance | Best for |
|---|---|---|---|---|
| RAID 0 | 100% | ❌ None | ⚡ Max | Scratch, render, temp |
| RAID 1 | 50% | ✅ N−1 drives | ↗ Good read | Boot, OS, critical data |
| RAID 5 | (N−1)/N | ✅ 1 drive | ↗ Good read | NAS, files, servers |
| RAID 6 | (N−2)/N | ✅ 2 drives | ↗ Good read | Archives, large arrays |
| RAID 10 | 50% | ✅ 1/pair | ⚡ Max | DB, VMs, critical |
| RAID 50 | (N−G)/N | ✅ 1/group | ↗ Good | Large high-perf arrays |
| RAID 60 | (N−2G)/N | ✅ 2/group | ↗ Good | Enterprise archives |
| JBOD | 100% | ❌ None | → Normal | Bulk storage, no perf need |