Western Digital WD Red NAS
WD Red 2TB WD20EFAX (2019) is a 5400‑RPM SMR 3.5-inch SATA HDD for budget NAS mass storage and media libraries.
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Product overview
Launched on April 19, 2019, the Western Digital WD Red 2TB (model WD20EFAX) is part of the WD Red NAS HDD family’s SMR-era refresh, adding a 256MB cache while moving the 2–6TB models to device‑managed SMR. It’s a 3.5-inch, SATA 6 Gb/s, 5400‑RPM‑class drive intended for home/SOHO NAS use up to eight bays.
Positioned as a budget NAS option, it exists to provide inexpensive, quiet mass storage rather than high write throughput. Its SMR layout and large cache suit sequential reads and light, sustained writes—good for media libraries, backups, and secondary PC “game library” roles, or a budget upgrade where capacity per dollar matters. Unique note: this specific 2TB WD Red uses SMR recording (WD20EFAX).
- mass storage
- game library
- budget upgrade
Product highlights
- Available in capacities ranging from 2-6TB with support for up to 8 bays
- 5400RPM performance class
- NASware firmware for compatibility
- NAS systems with daily workloads associated with personal and home office environments and idle time available to perform necessary background operations
Specifications
- Capacity
- 2 TB
- Type
- HDD
- Form factor
- 3.5
- Hardware Interface
- SATA
- Data Transfer Rate
- 600 MB
- Read speed
- 180 MB/s
- Tdp
- 4 W
