Western Digital Red 4TB NAS Hard Drive
A NAS-tuned HDD built for always-on, multi-drive reliability.
Full Specification Sheet
| Type | Internal HDD, NAS-optimized |
|---|---|
| Capacity | 4 TB |
| Interface | SATA 6Gb/s |
| Form Factor | 3.5-inch |
| Spindle Speed | 5400 RPM (IntelliPower) |
| Cache | 64 MB |
Western Digital's Red 4TB is purpose-built for network-attached storage: rated for 24/7 operation across multi-bay NAS enclosures, with firmware tuned for vibration handling when several drives spin in the same chassis — something desktop-grade drives aren't validated for.
Running at 5400 RPM (WD's IntelliPower variable-speed spec) with 64MB of cache, it prioritizes quiet, cool, power-efficient operation over raw peak throughput, which is the right trade-off for a drive that's expected to run continuously for years inside a home or small-office NAS.
For anyone building or expanding a NAS array rather than a single desktop drive, the Red 4TB remains one of the most trusted choices for that specific job.
