Free NAS drive dataset
An open dataset of NAS hard drives - full specs, CMR vs SMR, and real-world Backblaze failure rates. The specs and CMR/SMR data are free to use under CC BY 4.0 with credit; the failure rates come from Backblaze Drive Stats.
Download
205 drives, 25 with a measured failure rate.
Refreshed as the catalogue and Backblaze data update. No signup, no key, no rate limit.
Licence & attribution
The drive specs and CMR/SMR classification are released under Creative Commons CC BY 4.0 - copy, remix and redistribute, even commercially, as long as you credit the source:
Drive specs & CMR/SMR by nasdisks.com (https://www.nasdisks.com), CC BY 4.0
The failure-rate fields (afr_pct and the drive-count, drive-days and failure totals) come from Backblaze Drive Stats and stay under Backblaze's terms: cite Backblaze, and you may not sell the data itself. Backblaze does not endorse this project.
API
Both endpoints are read-only GETs, allow cross-origin requests (Access-Control-Allow-Origin: *) and are cached for an hour, so you can call them straight from a browser, a notebook or a build step.
https://www.nasdisks.com/data/drives.json- JSON: a top-level object withlicense,countand adrivesarray.https://www.nasdisks.com/data/drives.csv- the same rows as a flat CSV.
curl -s https://www.nasdisks.com/data/drives.json | jq '.drives[0]'
Machine-readable contract: openapi.yaml (OpenAPI 3.0, covers both endpoints plus the embed price feed).
What's inside
Each drive row carries: model, brand, line, capacity_tb, rpm, cache_mb, interface, form_factor, recording_tech (cmr/smr), drive_class and in_production. Where Backblaze tracks the model, it also carries afr_pct (annualized failure rate) plus the drive-count, drive-days and failure totals behind it.
| Model | Drive | TB | Tech | AFR % |
|---|---|---|---|---|
| SBFPF2BV307T001 | Solidigm D5-P5336 | 30 | - | |
| WUH722626ALE6L4 | WD Ultrastar DC HC590 | 26 | cmr | 0.40 |
| ST24000NM002H | Seagate Exos X24 | 24 | cmr | 2.75 |