WD Red HDD Spec and Price in the United States
The base WD Red line is the entry NAS drive, and the reason the Red Plus exists: from 2TB up these SKUs are SMR (shingled magnetic recording), which WD discloses on the product brief as unsuitable for RAID-heavy write workloads. They spin at 5400rpm with a 256MB cache, carry NASware, and are fine for single-drive or lightly-written home NAS use — the three-year warranty and the price gap versus Red Plus are the honest signals that this is the capacity-over-durability pick.
Captured periodically and may have changed.
- 2TB
- 3TB
- 4TB
- 6TB
- 8TB
Each point is one capture, not a list price. How we track prices
Specifications
- Capacity
- 4TB
- Interface
- SATA
- Sequential read
- 180 MB/s
- Sequential write
- 180 MB/s
- Rotation speed
- 5400 RPM
- Form factor
- 3.5-inch
- Cache
- 256 MB
- Warranty
- 3 years
Capacities
Guides for this category
What owners and reviewers say
Summarised from 1 source(s), reviewed September 13, 2026. A source is counted only where it names this model exactly. How we track prices
Commonly praised
- Reviewers note it uses less energy than a desktop drive, with NAS-oriented firmware and quieter operation.
- Its overall performance is good for the class.
Commonly criticised
- It trailed the competing NAS drive slightly in most benchmarks.
Sources behind this summary
Sources
Every spec above was pulled from one of these — a field a source didn't state was left off rather than estimated.