NAS Drive Price & Reliability Report
August 2026 · UK prices · 153 drives tracked
Updated August 8, 2026 · refreshed automatically every day.
Auto-generated from our live catalogue: real failure rates from Backblaze thru Q1 2026, and Amazon prices refreshed daily. This page updates itself, so it is always the current snapshot.
1.34% avg AFR across all Backblaze-tracked models.
137 CMR (RAID-safe) · 16 SMR (avoid in arrays).
15 capacity tiers with a live UK price.
Best value ($/TB) by capacity
| TB | Cheapest drive | Tech | $/TB | Price |
|---|---|---|---|---|
| 26 | WUH722626ALE6L4 WD Ultrastar DC HC590 | CMR | $66.47 | £1,361 |
| 24 | MG11ACA24TE Toshiba MG11 | CMR | $52.61 | £994 |
| 22 | MG10AFA22TE Toshiba MG10 | CMR | $49.27 | £854 |
| 20 | ST20000VE002 Seagate SkyHawk AI | CMR | $32.99 | £519 |
| 18 | ST18000NM000J Seagate Exos X18 | CMR | $38.10 | £540 |
| 16 | MG08ACA16Tx Toshiba MG08 | CMR | $30.52 | £384 |
| 14 | WUH721414ALE6L4 WD Ultrastar DC HC530 | CMR | $35.83 | £395 |
| 12 | ST12000VN0008 Seagate IronWolf | CMR | $43.29 | £409 |
| 10 | ST10000VN000 Seagate IronWolf | CMR | $48.26 | £380 |
| 8 | HUS728T8TALE6L4 WD Ultrastar DC HC320 | CMR | $41.12 | £259 |
| 6 | ST6000DM003 Seagate BarraCuda | SMR | $44.24 | £209 |
| 4 | ST4000VX016 Seagate SkyHawk | CMR | $52.39 | £165 |
| 3 | ST3000DM007 Seagate BarraCuda | SMR | $67.73 | £160 |
| 2 | ST2000VX017 Seagate SkyHawk | CMR | $78.74 | £124 |
| 1 | ST1000VX013 Seagate SkyHawk | CMR | $152.37 | £120 |
Most reliable (lowest AFR)
| Drive | AFR | Sample |
|---|---|---|
| ST16000NM000J 16TB | 0.17% | 466 |
| MG11ACA24TE 24TB | 0.42% | 7,203 |
| WUH722222ALE6L4 22TB | 0.45% | 45,638 |
| ST16000NM001G 16TB | 0.53% | 34,729 |
| WUH722626ALE6L4 26TB | 0.67% | 3,604 |
Highest AFR (watch list)
| Drive | AFR | Sample |
|---|---|---|
| HUH721212ALE604 12TB | 2.98% | 25,665 |
| ST24000NM002H 24TB | 2.91% | 9,605 |
| MG09ACA16TE 16TB | 1.46% | 506 |
| MG08ACA16Tx 16TB | 1.43% | 51,185 |
| ST14000NM001G 14TB | 1.24% | 10,519 |
Biggest price drops (UK)
| Drive | Was | Now | Drop |
|---|---|---|---|
| HDWG21C 12TB | £500 | £411 | -18% |
| ST12000VE003 12TB | £580 | £430 | -26% |
| MG10AFA22TE 22TB | £1,040 | £854 | -18% |
| ST6000VN006 6TB | £255 | £235 | -8% |
| ST4000VX016 4TB | £175 | £165 | -6% |
| HDWD260 6TB | £263 | £248 | -6% |
| ST4000VN006 4TB | £185 | £166 | -10% |
| HDWG480 8TB | £388 | £348 | -10% |
| WD60EZAX 6TB | £279 | £262 | -6% |
| WD221KFGX 22TB | £1,060 | £969 | -9% |
See the live deals feed for the full list.
Method
Failure rates are recomputed from Backblaze's Drive Stats (drive-days and failures) - source: Backblaze thru Q1 2026 - not vendor MTBF numbers; models Backblaze does not track use the manufacturer's series spec. Prices are the cheapest in-stock new Amazon offer per drive in UK, refreshed daily, with $/TB in USD for cross-currency ranking. Explore it all in the full filterable table.