Western Digital · Enterprise
WD203KRYZ
WD Gold 20TB
SATA 6Gb/s · 3.5-inch · CMR
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View on Amazon US ↗New listing · ASIN B0DF9FK544
Listing details ↓As an Amazon Associate I earn from qualifying purchases.The Western Digital WD203KRYZ is a 20TB WD Gold hard drive for server and enterprise storage, using SATA 6Gb/s in a 3.5-inch form factor.
Manufacturer specifications
| Model number | WD203KRYZ |
|---|---|
| Nominal capacity | 20 TB · 20000 GB |
| RPM | 7200 |
| Interface | SATA 6Gb/s |
| Recording | CMR |
| Cache (MB) | 512 |
| Form factor | 3.5-inch |
| Workload rating (TB/year) | 550 |
| Logical sector size (bytes) | 512 |
| Physical sector size (bytes) | 4096 |
| Manufacturer limited warranty | 5 years (eligible new drives) |
| Sustained transfer (up to MB/s) | 285 |
Source: Western Digital WD Gold manufacturer datasheet. Reviewed 2026-08-21. Published specifications, not our benchmark results.
What the specifications mean
- CMR recording is specified for this exact model. Check enclosure support and workload limits before installing it in an array.
- Up to 285 MB/s sustained transfer, as specified by the manufacturer. This is not a measured game-loading or random-I/O result.
- 550 TB/year workload rating. This is a workload limit, not a promise of drive lifespan or a backup guarantee.
Before ordering
Match WD203KRYZ, 20TB and SATA 6Gb/s against the selected offer. Check your system’s exact-model compatibility list and the seller’s warranty and return terms.
Amazon US listings
Exact model matches on Amazon.com. A verified ASIN identifies the product; it does not guarantee current stock. Check the selected variant, condition and seller.
Amazon US · ASIN B0DF9FK544
Same-capacity alternatives with Amazon US links
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Is WD203KRYZ CMR or SMR?
The manufacturer lists CMR recording for WD203KRYZ. Other models and capacities in the same family can differ.
What connection does WD203KRYZ need?
WD203KRYZ uses SATA 6Gb/s and a 3.5-inch form factor. Match both with the computer, controller or enclosure. An M.2 slot, 2.5-inch bay and 3.5-inch bay are not interchangeable.
How much usable space does WD203KRYZ provide?
Its nominal capacity is 20000 GB, approximately 18626.5 GiB before formatting. The filesystem, reserved space and any RAID redundancy reduce usable capacity further.
What warranty is listed for WD203KRYZ?
Manufacturer specification: 5 years (eligible new drives). A renewed, used, OEM or imported offer can have different coverage. Check the serial number and seller terms before buying.