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Live prices · Sorted by price per TB

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 September 06, 2026

Top 10 by Price per TB

We found 20 currently available 20TB Hard Drives (showing the top 10 by price per TB). Prices start at $549.99, with the lowest price per TB currently at $27.93/TB.

# Product Capacity Condition Price / TB Price Region
1 MDD (MDD22TSATA25672DVR) 22TB 7200RPM 256MB Cache SATA 6.0Gb/s 3.5inch Internal Surveillance Hard Drive - 3 Years Warranty (Renewed) 21.5 TB Used $27.93 /TB $599.99 us View
2 Western Digital WD Ultrastar 20TB Internal Hard Drive WD200EDGZ 3.5 Inch HDD SATA 6Gb/s 7200RPM 512MB Cache (Renewed) 19.5 TB Used $28.16 /TB $549.99 us View
3 Seagate Exos 22TB SATA HDD 6Gb/s 7200RPM 3.5-inch Enterprise Hard Drive (ST22000NM000C) (Renewed) 21.5 TB Used $28.35 /TB $609.00 us View
4 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 $30.25 /TB $649.99 us View
5 BUFFALO Replacement Spare Hard Drive 20TB NAS-Grade for TeraStation 2/4/8 Bay (OP-HD20.0N) 19.5 TB New $32.26 /TB $629.99 us View
6 TOSHIBA N300 Internal Hard Drive 22 Tb 7200 RPM 512 Mb 3.5", W129161818 (Tb 7200 RPM 512 Mb 3.5 Serial Ata Iii) 21.5 TB New $32.35 /TB $694.75 us View
7 Seagate Exos X20 ST20000NM007D 20TB 7.2K RPM SATA 6Gb/s 3.5in Hard Drive (Renewed) 19.5 TB Used $34.30 /TB $669.99 us View
8 Seagate Exos X20 ST20000NM007D 20TB 7.2K RPM SATA 6Gb/s 3.5in Hard Drive 19.5 TB Used $34.46 /TB $849.00 us View
9 Seagate Skyhawk AI 20TB Video Internal Hard Drive HDD – 3.5 Inch SATA 6Gb/s 512MB Cache for DVR NVR Security Camera System with in-House Rescue Services (ST20000VE003) 19.5 TB New $36.86 /TB $719.99 us View
10 Toshiba 22TB Enterprise Internal Hard Drive – MG Series 3.5" SATA HDD for Server, Storage, 24/7 Operation, Hyperscale, Cloud (MG10AFA22TE) 21.5 TB New $37.05 /TB $795.99 us View
See all 20 listings

What to Check Before Buying a 20TB Hard Drive

CMR vs SMR

For NAS, RAID, or heavy write workloads, insist on CMR. SMR drives are fine for cold backups but stall under sustained writes.

Warranty length

3 years is standard for desktop drives, 5 years for NAS/enterprise lines (WD Red Pro, Seagate IronWolf Pro, Toshiba N300).

Workload rating

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.

Price per TB

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?
A single 20TB drive holds roughly 800 Blu-ray-quality movies or 5,000k smartphone photos. For a NAS you typically want at least two drives for redundancy, so factor in the cost of a pair when comparing against one larger drive.
Should I buy a new or used 20TB hard drive?
Used and recertified enterprise drives often cost 30-50% less per TB and were built for 24/7 duty, but usually carry a short seller warranty instead of a 5-year manufacturer one. For irreplaceable data, buy new or buy used only with redundancy (RAID or backups).
What is a good price per TB for a 20TB hard drive right now?
The table above is sorted by price per TB and refreshes with live market data, so the top rows are the current answer. As a rule of thumb, larger capacities (12TB+) usually hit the lowest per-TB prices, while very small drives carry a fixed-cost premium.

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.

Open full table

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