Seagate 20TB SATA Enterprise HDD - Prices

7 drives tracked. From $21.76/TB. Updated about once a day.

Buy or Skip?
✓ Buy if: you want 41% below-average pricing on 20TB Seagate drives. These are datacenter pulls - verify SMART data on arrival.
✗ Skip if: you require new-only drives for production RAID or need guaranteed OEM warranty - consider new alternatives.
Buy on Amazon $435.12
Best $/TB
$21.76
Drives
3
Condition
New + Refurb

At $21.76/TB, Seagate 20TB SATA drives are $18.80/TB cheaper than the 20TB SATA category average of $40.56/TB — strong value at this capacity.

Seagate 20TB SATA - worth it?

Seagate 20TB SATA drives span the Exos X enterprise line and IronWolf Pro NAS series, both CMR and RAID-safe. Starting at $21.76/TB.

20TB is the best value we track today - the lowest matched-interface $/TB of any HDD capacity on this site right now, at $21.76/TB across 12 in-stock listings. See the full value-frontier curve for how every capacity compares.

Condition
Capacity
3 of 3 part numbers
  • $21.76/TB$435.12
    Seagate SkyHawk AI 20TB ST20000VE003
    ST20000VE003
    20TB · SATA-6G
    Refurb
  • $44.00/TB$879.99
    Seagate IronWolf Pro 20TB NAS
    ST20000NT001
    20TB · SATA-6G
    New
  • $44.00/TB$879.99
    Seagate SkyHawk AI 20TB ST20000VE003
    ST20000VE003
    20TB · SATA-6G
    New

Guides for this capacity: best 20TB hard drive · the HDD price forecast · fill a NAS at today's prices

Drive Specifications

Seagate SkyHawk AI 20TB ST20000VE003
ST20000VE003
REFURB
This offer: sold by Amazon Resale · Amazon says Used / LikeNew · Amazon Resale's note: No item damage observed during inspection. Item will come in original packaging.
$21.76/TB
$435.12 total
Capacity
20TB
Interface
SATA-6G
Form Factor
3.5"
Recording
CMR
RPM
N/A
Cache
512MB
Sector Size
—
Workload
550TB/yr
Warranty
5 years
Seagate IronWolf Pro 20TB NAS
ST20000NT001
This offer: sold by QuickDealStore · Amazon says New / Unknown
$44.00/TB
$879.99 total
Capacity
20TB
Interface
SATA-6G
Form Factor
3.5"
Recording
Not sourced
RPM
7,200
Cache
256MB
Sector Size
512e
Workload
300TB/yr
Warranty
5 years
Seagate SkyHawk AI 20TB ST20000VE003
ST20000VE003
This offer: sold by Prime MegaStore · Amazon says New / Unknown
$44.00/TB
$879.99 total
Capacity
20TB
Interface
SATA-6G
Form Factor
3.5"
Recording
CMR
RPM
N/A
Cache
512MB
Sector Size
—
Workload
550TB/yr
Warranty
5 years

Other brands at 20TB SATA

Frequently Asked Questions

3 in-stock listings out of 7 tracked; the cheapest is the Seagate SkyHawk AI 20TB ST20000VE003 at $435.12 ($21.76/TB). The table on this page is the live ranking.

Both are in stock: 2 new and 1 recertified or used. The cheapest new is the Seagate IronWolf Pro 20TB NAS at $879.99, the cheapest recertified or used the Seagate SkyHawk AI 20TB ST20000VE003 at $435.12 - a 51% shelf gap between two different models, not a like-for-like discount. New carries the manufacturer's warranty; recertified a reseller's.

5 of the 7 tracked listings carry a manufacturer-sourced conventional (CMR/ePMR) recording value, including the Seagate SkyHawk AI 20TB ST20000VE003 and the Seagate Exos X20 20TB. 2 are not sourced either way - an unsourced drive is never assumed CMR here.

Use Case Scenarios

🏠
Home & SMB NAS
Building a high-capacity NAS for media, backups and file sharing.
✓ Excellent fit
CMR recording is RAID-safe and fully compatible with Synology, QNAP, TrueNAS and UnRAID. Refurb units offer strong value for non-critical NAS.
💾
Backup Server / Veeam Target
Dedicated backup storage for Veeam, Commvault, or NetBackup.
✓ Excellent fit
20TB SATA drives are ideal for backup targets. SATA gives maximum $/TB for backup repositories.
☁️
Object Storage / Cold Data Tier
High-density storage for MinIO, Ceph or Hadoop at scale.
✓ Excellent fit
At 20TB per drive, a 60-bay JBOD delivers 1200TB raw — enough for petabyte-scale object storage.

Maintenance & Troubleshooting

Maintenance Checklist

On installCheck SMART baseline on arrival
Run smartctl -a /dev/sdX and record: Reallocated_Sector_Ct, Power_On_Hours, Spin_Retry_Count. Critical for refurb drives — refuse any with reallocated sectors > 0.
MonthlyRun SMART short self-test
smartctl -t short /dev/sdX — takes 1-2 minutes, catches most developing issues. Schedule during off-peak.
QuarterlyRun SMART long self-test
smartctl -t long /dev/sdX — full surface scan, takes 10 hours for 20TB. Any test failure is grounds for immediate replacement.
QuarterlyCheck RAID array health
Verify no degraded drives. A degraded array with no hot spare is one failure from data loss. Check mdstat or controller UI.
AnnuallyVerify drive firmware version
Check Seagate support site for firmware updates. Some versions have known bugs affecting integrity.
Every 3-5 yearsPlan proactive replacement
Enterprise HDDs have higher failure rates after year 4-5. At 20TB per drive, budget for replacements before failures occur.

Troubleshooting Guide

Cause: Loose SATA data or power cable, failed port, or drive not spinning up.
Fix: Reseat both cables. Try a different port. Listen for spin-up sound. Test with a known-good cable.