Best 22TB NAS hard drives
We track 7 currently-sold 22TB NAS drives from WD, Seagate and Toshiba, ranked by real-world failure rate. The lowest measured annualized failure rate is the WD Ultrastar DC HC570 WUH722222ALE6L4 at 0.45% (Backblaze Drive Stats). Best value is the WD WD221PURP at about $45.89/TB.
| Drive | Capacity | Tech | Class | Interface | AFR | £/TB | Price | |
|---|---|---|---|---|---|---|---|---|
| 1 |
WUH722222ALE6L4
WD Ultrastar DC HC570
|
22 TB | CMR | Enterprise | SATA | 0.45% | £48.00 | £1,056 |
| 2 |
WD221KFGX
WD Red Pro
|
22 TB | CMR | NAS-Pro | SATA | - | £43.82 | £964 |
| 3 |
WD221KRYZ
WD Gold
|
22 TB | CMR | Enterprise | SATA | - | £61.87 | £1,361 |
| 4 |
WD221PURP
WD Purple Pro
|
22 TB | CMR | Surveillance | SATA | - | £36.14 | £795 |
| 5 |
ST22000NT001
Seagate IronWolf Pro
|
22 TB | CMR | NAS-Pro | SATA | - | - | - |
| 6 |
ST22000NM001E
Seagate Exos X22
|
22 TB | CMR | Enterprise | SATA | - | £44.78 | £985 |
| 7 |
MG10AFA22TE
Toshiba MG10
|
22 TB | CMR | Enterprise | SATA | - | £38.80 | £854 |
Ranked by measured failure rate (Backblaze AFR). $/TB uses the cheapest live price where available.
Every drive here is a CMR (RAID-safe) 22TB model in current production. For a NAS or RAID array, pick the lowest failure rate you can afford; enterprise drives (Exos, Ultrastar, MG) trade some noise and power draw for the longest workload ratings. See how to choose a NAS drive for the full rundown.
Frequently asked questions
- What is the most reliable 22TB NAS drive?
- WD Ultrastar DC HC570 WUH722222ALE6L4 has the lowest Backblaze annualized failure rate at this capacity at the time of writing.
- Are 22TB NAS drives CMR or SMR?
- Every 22TB drive we recommend for NAS use is CMR (conventional recording), the RAID-safe choice. We exclude SMR drives from NAS picks.