Western Digital WD Red Pro NAS Storage

Western Digital WD Red Pro NAS

Brand
Western Digital
Model
WD Red Pro NAS
$474–$524estimated range · from catalog price Jun 22, 2026

WD Red Pro 20TB (WD201KFGX) is a 3.5-inch 7200 RPM CMR NAS HDD best for high-capacity mass storage in multi-bay arrays.

Storage performance rankTop 63% of storage drives
TierWorkstation?GixCore tierWhat a part was built to do — not what it costs.EntryBudgetMainstreamHigh endEnthusiastFlagshipWorkstationWorkstation parts sit outside that ladder — built for sustained professional workloads rather than a price-for-performance rung. A part can be cheap because it is an ageing flagship, or because it is a current entry-level model. The tier tells you which.
ReleasedFeb 2022
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Capacity20 TB
TypeHDD
InterfaceSATA
Read speed268 MB/s
Form factor3.5
GixCore Editorial

Product overview

Released on February 28, 2022, the 20TB WD Red Pro (model WD201KFGX) joins Western Digital’s Red Pro NAS family of helium‑filled, CMR hard drives for multi‑bay NAS enclosures. It’s part of the OptiNAND‑enabled Red Pro generation and ships in the 3.5-inch SATA form factor. Positioned as a workstation‑class NAS HDD, it exists to provide reliable bulk capacity for 24/7 arrays. With 20TB per drive, 7200 RPM and a 512MB cache, it’s well suited to RAIDed NAS shares that hold large media libraries and other cold/warm datasets, or a PC’s secondary “game library” disk. Notable: it uses WD’s OptiNAND embedded flash to handle metadata more efficiently. Discontinuation status not confirmed.

Best for
  • mass storage
  • game library
Official product specifications

Specifications

At a glance iEach dot represents a catalog model. Farther right means a higher measured value, not necessarily a better fit.Measured against the storage drives catalog
Current modelCatalog models
Capacity20 TB
Higher than 95% of storage drives
Read speed268 MB/s
Higher than 41% of storage drives
Capacity
20 TB
Type
HDD
Form factor
3.5
Hardware Interface
SATA
Data Transfer Rate
600 MB
Read speed
268 MB/s
Tdp
6 W
Pairing fit

Compatible Motherboards

Compatible options ranked for this part's performance class.