Filter currently-sold NAS hard drives by CMR/SMR, capacity, class and real-world failure rates (Backblaze AFR). 140 drives. Compare NAS-relevant SSDs by endurance (TBW/DWPD), NAND type, DRAM cache and power-loss protection. QLC flagged like SMR. 56 drives. Live cheapest price/TB across 7 regions. Open CC BY 4.0 dataset + API. Affiliate-funded, nothing gated.

I built NASdisks because every time I speced a NAS I hit the same wall: "NAS" on the box tells you nothing about whether a drive is SMR (which can wreck a RAID rebuild), and vendor MTBF numbers are marketing. So, I put what actually matters in one table - CMR vs SMR judged per model, failure rates I compute from Backblaze's raw Drive Stats, noise, and the live cheapest price-per-TB across 7 Amazon regions, refreshed daily. It covers SSDs too, with the stuff that actually decides endurance in a NAS - TBW/DWPD, NAND type, DRAM cache and power-loss protection, with QLC flagged the way SMR is. No login, nothing gated. The data is open (CC BY 4.0) with a free API. Happy to answer anything about the methodology.

I compute annualized failure rates per model from Backblaze's raw Drive Stats.
A few that stand out right now: Seagate Exos X18 16TB around 0.17%, Toshiba MG11 24TB around 0.42%, while some 16TB Toshiba MG08 sit above 1.4%.
Full rankings and how it's computed are on the site.
Curious what people here are actually running - and whether reliability or price/TB drives your buying more?

NASdisks

Compare NAS HDDs & SSDs: CMR/SMR, endurance, live price/TB

Compare NAS HDDs & SSDs: CMR/SMR, endurance, live price/TB

Forum Threads

The lowest-failure-rate NAS drives right now (from Backblaze's raw data)

Forum Threads

The lowest-failure-rate NAS drives right now (from Backblaze's raw data)