Western Digital · NAS
WD20EFPX
WD Red Plus 2TB
SATA 6 Gb/s · 3.5-inch · CMR
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Compare alternatives ↓As an Amazon Associate I earn from qualifying purchases.The Western Digital WD20EFPX is a 2TB WD Red Plus hard drive for NAS storage, using SATA 6 Gb/s in a 3.5-inch form factor.
Manufacturer specifications
| Model number | WD20EFPX |
|---|---|
| Nominal capacity | 2 TB · 2000 GB |
| RPM | 5400 |
| NAS bays | Up to 8 |
| Interface | SATA 6 Gb/s |
| Recording | CMR |
| Cache (MB) | 64 |
| Form factor | 3.5-inch |
| Workload rating (TB/year) | 180 |
| Manufacturer limited warranty | 3 years (eligible new drives) |
Source: WD Red Plus datasheet, September 2025, pages 2. Reviewed 2026-09-07. 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.
- 180 TB/year workload rating. This is a workload limit, not a promise of drive lifespan or a backup guarantee.
Before ordering
Match WD20EFPX, 2TB and SATA 6 Gb/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.
No verified exact-model ASIN is linked yet. This does not establish whether the model is currently available. Compare the alternatives below and check their listings.
WD20EFPX questions answered
Is WD20EFPX CMR or SMR?
The manufacturer lists CMR recording for WD20EFPX. Other models and capacities in the same family can differ.
What connection does WD20EFPX need?
WD20EFPX uses SATA 6 Gb/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 WD20EFPX provide?
Its nominal capacity is 2000 GB, approximately 1862.6 GiB before formatting. The filesystem, reserved space and any RAID redundancy reduce usable capacity further.
What warranty is listed for WD20EFPX?
Manufacturer specification: 3 years (eligible new drives). A renewed, used, OEM or imported offer can have different coverage. Check the serial number and seller terms before buying.