Fleet failure rate

1.36% avg AFR across all Backblaze-tracked models.

CMR vs SMR

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

Coverage

15 capacity tiers with a live NL price.

Best value ($/TB) by capacity

TBCheapest driveTech$/TBPrice
26 WUH722626ALE6L4 WD Ultrastar DC HC590 CMR $44.74 €1,077
24 ST24000VE002 Seagate SkyHawk AI CMR $43.43 €965
22 ST22000NT001 Seagate IronWolf Pro CMR $37.31 €760
20 ST20000NM007D Seagate Exos X20 CMR $37.31 €691
18 WD181KRYZ WD Gold CMR $34.45 €574
16 MG08ACA16Tx Toshiba MG08 CMR $29.69 €440
14 ST14000NM001G Seagate Exos X16 CMR $34.71 €450
12 ST12000NM001G Seagate Exos X16 CMR $39.71 €441
10 WUS721010ALE6L4 WD Ultrastar DC HC330 CMR $39.69 €368
8 ST8000DM004 Seagate BarraCuda SMR $32.40 €240
6 MG06ACA600E Toshiba MG06 CMR $39.82 €221
4 WD4004FRYZ WD Gold CMR $44.15 €164
3 WD30EFAX WD Red SMR $55.80 €155
2 ST2000VX017 Seagate SkyHawk CMR $43.15 €80
1 ST1000VX013 Seagate SkyHawk CMR $73.33 €68

Most reliable (lowest AFR)

DriveAFRSample
ST16000NM000J 16TB 0.22% 465
WUH722626ALE6L4 26TB 0.40% 1,200
WUH722222ALE6L4 22TB 0.47% 44,265
ST16000NM001G 16TB 0.54% 34,305
MG10ACA20TE 20TB 0.59% 17,999

Highest AFR (watch list)

DriveAFRSample
HUH721212ALE604 12TB 2.97% 25,393
ST24000NM002H 24TB 2.75% 8,328
MG09ACA16TE 16TB 1.73% 348
MG08ACA16Tx 16TB 1.48% 50,513
ST14000NM001G 14TB 1.35% 10,464

Biggest price drops (NL)

DriveWasNowDrop
ST14000NM001G 14TB €500 €450 -10%
WUH721414AL5204 14TB €730 €499 -32%
ST12000VN0008 12TB €550 €461 -16%
ST6000VX009 6TB €263 €239 -9%
ST12000NT001 12TB €519 €478 -8%
WD120EFBX 12TB €569 €492 -14%
ST8000VE001 8TB €398 €330 -17%
ST6000VN006 6TB €280 €250 -11%
ST12000VE001 12TB €679 €509 -25%
ST16000NT001 16TB €871 €682 -22%

See the live deals feed for the full list.

Method

Failure rates are recomputed from Backblaze's raw full-year 2025 Drive Stats (drive-days and failures), 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 NL, refreshed daily, with $/TB in USD for cross-currency ranking. Explore it all in the full filterable table.