Best 20TB Hard Drive Deals Right Now
Every 20TB hard drive we track, in one live table sorted by price per TB. Prices refresh from Amazon regions throughout the day, so the top row is the current best deal at this capacity. Below the table: what to check before you buy, and answers to the most common 20TB questions.
Updated July 29, 2026
Top 8 by Price per TB
See all 8 listings| # | Product | Capacity | Condition | Price / TB | Price | Region | |
|---|---|---|---|---|---|---|---|
| 1 | Seagate (Recertified) Exos X22 22TB Internal Hard Drive - 3.5 Inch Hyperscale SATA 6Gb/s HDD, 7200 RPM, 2.5M MTBF, 512e and 4Kn FastFormat, Low Latency with Enhanced Caching (ST22000NM001E) | 21.5 TB | Used | $27.93 /TB | $600.00 | us | View |
| 2 | MDD (MDD22TSATA25672DVR) 22TB 7200RPM 256MB Cache SATA 6.0Gb/s 3.5inch Internal Surveillance Hard Drive - 3 Years Warranty (Renewed) | 21.5 TB | Used | $30.72 /TB | $660.00 | us | View |
| 3 | Seagate Exos X20 ST20000NM007D 20TB 7.2K RPM SATA 6Gb/s 3.5in Hard Drive | 19.5 TB | Used | $34.56 /TB | $675.00 | us | View |
| 4 | WD Ultrastar DC HC570 0F48155 22 TB Hard Drive - 3.5" Internal - SATA (SATA/600) - Conventional Magnetic Recording (CMR) Method | 21.5 TB | New | $38.63 /TB | $830.00 | us | View |
| 5 | Seagate (Renewed) Exos X22 20TB SATA 6Gb/s 7200RPM 3.5-inch Enterprise HDD (ST20000NM004E) | 19.5 TB | Used | $40.96 /TB | $800.00 | us | View |
| 6 | Seagate Technology ST20000NM002H 20TB Exos X24 HDD 3.5 SATA 7200 ISE Bare Hard Drive | 19.5 TB | New | $40.96 /TB | $800.00 | us | View |
| 7 | Seagate Exos X20 ST20000NM007D 20TB 7.2K RPM SATA 6Gb/s 3.5in Hard Drive | 19.5 TB | New | $43.01 /TB | $840.00 | us | View |
| 8 | Western Digital 22TB WD Gold Enterprise Class SATA Internal Hard Drive HDD - 7200 RPM, SATA 6 Gb/s, 512 MB Cache, 3.5" - WD221KRYZ | 21.5 TB | New | $52.32 /TB | $1124.00 | us | View |
What to Check Before Buying a 20TB Hard Drive
For NAS, RAID, or heavy write workloads, insist on CMR. SMR drives are fine for cold backups but stall under sustained writes.
3 years is standard for desktop drives, 5 years for NAS/enterprise lines (WD Red Pro, Seagate IronWolf Pro, Toshiba N300).
NAS-class drives are rated 180-300 TB/year. Desktop drives (WD Blue, Barracuda) are rated 55 TB/year - fine for a PC, risky in a RAID array.
The single best value metric. Anything under the current market floor usually means used, shucked, or SMR - check the condition column.
Frequently Asked Questions
Is 20TB enough for a home NAS or media server?
Should I buy a new or used 20TB hard drive?
What is a good price per TB for a 20TB hard drive right now?
Want to filter by region, warranty, or condition?
The full price table compares every drive we track across Amazon US, UK, DE, FR, CA, IT, and ES.
More Best-Deal Pages