6 drives tracked. From $33.50/TB. Updated every 4 hours.
At $33.50/TB, Seagate 20TB SATA drives are $2.35/TB cheaper than the 20TB SATA category average of $35.85/TB — strong value at this capacity.
Seagate 20TB SATA drives span the Exos X enterprise line and IronWolf Pro NAS series, both CMR and RAID-safe. Starting at $33.50/TB.
| $/TB ▲ | Brand / Model | Cap | Interface | Tech | Cache | Sector | Wty | Price | Cond. | 90D | Buy | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
👑$33.50 ~ 30d avg | Seagate Exos X20 20TB ST20000NM007D Refurb · CMR · 5yr | 20TB | SATA-6G 7,200 RPM | CMR | — | — | 5yr | $669.99 | REFURB | Buy →Details | ▼ | |
$36.00 ~ 30d avg | Seagate IronWolf Pro 20TB NAS ST20000NT001 CMR · 5yr | 20TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $719.99 | new | Buy →Details | ▼ | |
$36.00 ~ 30d avg | Seagate SkyHawk AI 20TB ST20000VE003 ST20000VE003 CMR · 5yr | 20TB | SATA-6G | CMR | 512MB | — | 5yr | $719.99 | new | Buy →Details | ▼ | |
$40.00 ~ 30d avg | Seagate Exos X20 20TB ST20000NM002H CMR · 5yr | 20TB | SATA-6G 7,200 RPM | CMR | — | — | 5yr | $799.99 | new | Buy →Details | ▼ | |
$41.70 ↑ vs 30d avg | Seagate SkyHawk AI 20TB ST20000VE002 ST20000VE002 Refurb · CMR · 5yr | 20TB | SATA-6G | CMR | 256MB | — | 5yr | $834.00 | REFURB | Buy →Details | ▼ | |
$— | Seagate IronWolf Pro 20TB NAS ST20000NEZ00 CMR · 5yr | 20TB | SATA-6G 7,200 RPM | CMR | 256MB | 512e | 5yr | $— | — | Buy →Details | ▼ |
Seagate Exos and IronWolf Pro use CMR. Standard Barracuda may use SMR at some capacities. All enterprise drives on this page are CMR and RAID-safe.
Seagate 20TB SATA drives are compatible with all major NAS platforms including Synology DiskStation, QNAP, TrueNAS, UnRAID, and any server with SATA ports. Check your NAS manufacturer's compatibility list for confirmed models.
Both are available. New drives carry full manufacturer warranty. Refurbished units are datacenter pulls with low hours - excellent value for secondary storage and backup targets.