Fresh/Last checked Sep 04, 10:40 PM·Updated daily
US region
Hard Disk Prices
← Live table

Best NAS Hard Drives by Price per TB

The best NAS hard drive deal right now is whichever new, CMR drive on this page has the lowest price per TB — SMR and renewed drives are excluded because they don't hold up to RAID rebuild workloads.

Filling a NAS is where price per TB compounds: four or more bays multiply every dollar saved per terabyte. This list ranks today's new internal hard drive offers by price per TB — new only, because drives that run 24/7 in an array deserve full warranties.

The ranking re-computes on every snapshot refresh, and each entry shows how the offer compares against typical pricing for its capacity class, so you can time multi-drive purchases to genuine dips.

  1. HP 625140-001 3 TB 3.5" Internal Hard Drive - 625030-001, 625031-B21, 652766-B21

    $25.00 · $8.33/TB as of Sep 04, 10:40 PM

    Ranks #1 at $8.33/TB — 83% below the typical 3TB HDD. New condition, 3.5".

  2. WL 6TB 5700RPM 64MB Cache 5700RPM SATA III (6.0Gb/s) 3.5" Internal Hard Drive (Desktop PC, CCTV DVR, NAS) - w/1 Year Warranty

    $159.50 · $26.58/TB as of Sep 04, 10:40 PM

    Ranks #2 at $26.58/TB — 36% below the typical 6TB HDD. New condition, SATA, 3.5", 1 yr warranty.

  3. MDD MAXDIGITALDATA 12TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5-inch Internal Hard Drive for Surveillance Storage (MD12TBGSA25672DVR) - 3 Years Warranty

    $319.99 · $26.67/TB as of Sep 04, 10:40 PM

    Ranks #3 at $26.67/TB — 29% below the typical 12TB HDD. New condition, SATA, 3.5", 3 yr warranty.

  4. Seagate Exos X24 ST24000NM000C 24TB 7200RPM SATA 6Gb/s 512MB Cache CMR 3.5-Inch Enterprise Hard Drive

    $659.99 · $27.50/TB as of Sep 04, 10:40 PM

    Ranks #4 at $27.50/TB — 43% below the typical 24TB HDD. New condition, SATA, 3.5".

  5. HGST Ultrastar He12 | HUH721212ALE601 | 0F27454 | 12TB 7200 RPM 256MB SATA 6.0Gb/s 3.5" Cache | 512E | BitLocker Hard Drive Encryption | Power Disable Function |

    $329.99 · $27.50/TB as of Sep 04, 10:40 PM

    Ranks #5 at $27.50/TB — 27% below the typical 12TB HDD. New condition, SATA, 3.5".

  6. Seagate Enterprise Capacity 3.5 HDD (Constellation ES) 4TB 7200RPM

    $110.89 · $27.72/TB as of Sep 04, 10:40 PM

    Ranks #6 at $27.72/TB — 43% below the typical 4TB HDD. New condition.

  7. HGST Ultrastar 7K6000 HUS726060ALE610 0F23001 6TB 7200 RPM SATA 3.5" 512E ISE 128MB Cache Enterprise Hard Drive

    $169.99 · $28.33/TB as of Sep 04, 10:40 PM

    Ranks #7 at $28.33/TB — 32% below the typical 6TB HDD. New condition, SATA, 3.5".

  8. Toshiba MG04ACA600E 6TB 3.5" SATA 6GBPS Enterprise HDD

    $169.99 · $28.33/TB as of Sep 04, 10:40 PM

    Ranks #8 at $28.33/TB — 32% below the typical 6TB HDD. New condition, SATA, 3.5".

  9. MDD 12TB 7200RPM SATA 6Gb/s 256MB Cache 3.5inch Internal Desktop Hard Drive, MD12TBGSA25672

    $349.99 · $29.17/TB as of Sep 04, 10:40 PM

    Ranks #9 at $29.17/TB — 22% below the typical 12TB HDD. New condition, SATA, 3.5".

  10. Seagate 8TB BarraCuda Internal Hard Drive | SATA 6 Gb/s (ST8000DM004)

    $249.99 · $31.25/TB as of Sep 04, 10:40 PM

    Ranks #10 at $31.25/TB — 30% below the typical 8TB HDD. New condition, SATA.

Compare live hard disk prices for all matching deals →

What to look for

CMR is non-negotiable for NAS. RAID rebuilds and parity writes are exactly the workload where SMR drives crawl and get dropped from arrays. NAS-branded lines are CMR; verify before buying anything else that tops the list.

Buy for the rebuild, not just the build. Bigger drives mean longer rebuild windows when one fails — pairing very large drives with single-parity RAID is a risk; budget for dual parity or backups accordingly.

Mixing capacities wastes space in most RAID setups, which truncate every drive to the smallest member. Buying all bays from one strong deal — the kind this page surfaces — beats accumulating mismatched bargains.

FAQ

Do I need NAS-specific drives for a NAS?

NAS-class drives add vibration compensation, 24/7-rated firmware, and 3-year warranties — worth it for arrays of 4+ drives. For a 1–2 bay home NAS, a quality CMR desktop drive is a reasonable economy.

Why does this list exclude renewed drives?

A NAS array multiplies the cost of one early failure across rebuild risk to the whole pool. New drives with full warranties are the sane default; renewed enterprise drives belong in arrays built deliberately around redundancy.

What capacity is the sweet spot for a NAS?

Whatever this ranking says today — the sweet spot moves. Historically the second-largest mainstream capacity tier offers the best price per TB, because the newest largest tier carries an early-adopter premium.

Should all NAS drives be the same model?

Same capacity matters for RAID efficiency; same model is debatable. Some builders deliberately mix manufacturing batches to avoid correlated failures. Matching capacity from this list across two orders a few weeks apart achieves both.