Fleet failure rate

1.34% avg AFR across all Backblaze-tracked models.

CMR vs SMR

137 CMR (RAID-safe) · 16 SMR (avoid in arrays).

Coverage

15 capacity tiers with a live DE price.

Best value ($/TB) by capacity

TBCheapest driveTech$/TBPrice
26 WUH722626ALE6L4 WD Ultrastar DC HC590 CMR $54.71 €1,317
24 ST24000NM002H Seagate Exos X24 CMR $43.42 €965
22 ST22000NM001E Seagate Exos X22 CMR $32.40 €660
20 ST20000VE002 Seagate SkyHawk AI CMR $33.05 €612
18 ST18000NM000J Seagate Exos X18 CMR $36.69 €612
16 MG08ACA16Tx Toshiba MG08 CMR $29.69 €440
14 MG07ACA14TE Toshiba MG07 CMR $27.96 €362
12 ST12000NT001 Seagate IronWolf Pro CMR $43.11 €479
10 WD102KFBX WD Red Pro CMR $44.06 €408
8 ST8000DM004 Seagate BarraCuda SMR $41.07 €304
6 WD60EZAX WD Blue CMR $43.02 €239
4 ST4000DM004 Seagate BarraCuda SMR $53.19 €197
3 ST3000DM007 Seagate BarraCuda SMR $55.68 €155
2 WD20EZAZ WD Blue SMR $76.62 €142
1 ST1000VX013 Seagate SkyHawk CMR $146.59 €136

Most reliable (lowest AFR)

DriveAFRSample
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)

DriveAFRSample
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 (DE)

DriveWasNowDrop
MG07ACA14TE 14TB €440 €362 -18%
ST16000VE002 16TB €669 €627 -6%
WD60EZAX 6TB €310 €239 -23%
ST12000NT001 12TB €529 €479 -10%
WD102KFBX 10TB €627 €408 -35%
ST12000VE003 12TB €608 €518 -15%
HDWG11A 10TB €647 €442 -32%
ST6000NT001 6TB €329 €309 -6%
ST3000DM007 3TB €219 €155 -29%
WD181KFGX 18TB €1,062 €945 -11%

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 DE, refreshed daily, with $/TB in USD for cross-currency ranking. Explore it all in the full filterable table.