HDD · SAS · 20TB
Seagate Exos X20 vs WD Ultrastar DC HC560 20TB
The price verdict
Seagate Exos X20 20TB has the lower cost per TB.
Price comparison, including shipping; not an overall reliability rating.
↓ Lower cost / TB
Seagate Exos X20 20TB →ST20000NM002D
$369.99
$18.50 / TB
Usedprices last checked 2026-10-13 18:07 UTC
Buy on eBay →Compared drive
WD Ultrastar DC HC560 20TB →$799.99
$40.00 / TB
Newprices last checked 2026-10-13 18:07 UTC
Buy on eBay →Some “Buy” links earn us a commission. Who pays us.
the short version
- ▸On today's best listings the Seagate Exos X20 20TB is 54% cheaper per terabyte ($18.50/TB vs $40.00/TB). Prices move — check the live table below.
spec by spec
✓ marks the better value for each comparable specification.
| Spec | Seagate Exos X20 | WD Ultrastar DC HC560 |
|---|---|---|
| Cost per TB (today) | ✓$18.50/TB | $40.00/TB |
| Best total price | ✓$369.99 | $799.99 |
| Workload rating | 550 TB/yr | 550 TB/yr |
| Warranty | 5 years | 5 years |
| MTBF | 2.5M hours | 2.5M hours |
| Cache | 256 MB | ✓512 MB |
| Spindle speed | 7,200 RPM | 7,200 RPM |
| Recording | CMR | CMR |
| Form factor | 3.5" | 3.5" |
Specs are manufacturer figures for each family; prices are the cheapest in-stock listing found on the last ingest, including shipping. Used and refurbished listings may differ in firmware, sector size and remaining warranty — verify with the seller.
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