The answer — one pick, priced
Get the
WD Red Plus 8TB
no budget ceiling
The default home NAS drive across 15 sources: CMR, quiet at 5640 RPM, actually in stock, and at ~$32/TB the cheapest new drive per terabyte on this card.
Fit ledger — need → measured evidence
■ The catch — co-equal billing, always
It is the consumer tier and it shows. 5640 RPM, a 180TB/year workload rating and a 3-year warranty — against 550TB/year and 5 years on the pro drives. Fine for media and backup, wrong for a busy array writing all day. It also only got here by attrition: it fell from ~$340 to ~$259 because its rivals left the market, not because supply improved.
Dealbreaker? Runner-up №2 rates 550TB/yr for arrays that write all day ↓
■ Every product has a catch. Verdicts that hide it are how bad buys happen.
Don't buy this if…
- you need a NAS device (enclosure), not drives to put inside onenas devices home dossier →
- you need an external portable hard drive for backupsexternal hard drives dossier →
Wrong product for you is still a bad buy. These are the cases where we'd send you somewhere else.
Runners-up — if your needs differ
Adjacent verdicts — other needs, same method
Different budget, different household, different job — each of these is already researched, priced and verified. Take the one that matches your need.
Traps — this verdict avoids
Why the WD Red Plus 8TB is right for you
It avoids every trap below — and for just me, no budget cap, it is the pick because it delivers:
The name is not the spec
WD Red (non-Plus, non-Pro) is an SMR drive despite the NAS branding, and SMR stalls or fails outright during a RAID rebuild. Only WD Red Plus and WD Red Pro are CMR. All 15 drives here were checked against the manufacturer datasheet, never the listing title.
Renewed is not a discount
A Renewed Ultrastar HC580 24TB lists at ~$669 (~$28/TB) against ~$799 new — but the warranty drops from WD's 5 years to 90 days-2 years of third-party cover, with undisclosed prior power-on hours. Never price a recertified drive as if it were new.
One lot, one failure mode
Buy an array's drives from different batches, and enable SMART plus scheduled scrubs. Backblaze's 2025 fleet failure rate is a record-low 1.36% across 344,196 drives, but a correlated double failure during a rebuild is still how home arrays lose data — and RAID is not a backup.
Provenance — 15 sources, dated
Winners are picked from the full research dossier at knowledgelib.io. Prices, stock and listings are re-verified monthly.