NAS Hard Drive
Western Digital WD Blue 1 TB (WD10EZEX)
The Western Digital WD Blue WD10EZEX is a 1 TB NAS-class hard drive aimed at Consumer, Home. It spins at 7200 RPM with 64 MB of cache and carries a 2-year warranty. On this page you get the complete manufacturer specification, what the drive delivers inside common RAID levels, its measured or rated reliability, and where to buy it — all cross-checked against the datasheet.
| Capacity | 1 TB |
| Rotational speed | 7200 RPM |
| Cache | 64 MB |
| Interface | SATA 6Gb/s |
| MTBF | 1.0M h |
| URE rating | 1 / 1014 |
| Power (idle / load) | 3.5 / 5.7 W |
| Noise (idle / seek) | 28 / 32 dB |
| Workload rating | 55 TB/yr |
| Warranty | 2 years |
| Use cases | ConsumerHome |
Four of these 1 TB drives in RAID 5 give you 3 TB usable and survive one failure; in RAID 6, 2 TB and two failures. Plug your exact drive count and RAID level into the calculator to see usable capacity, efficiency and rebuild risk.
Open in the RAID calculator →This model is not yet in the Backblaze Drive Stats public dataset, so no independent field failure rate is available. The manufacturer specifies an MTBF of 1.0M h and a 55 TB/yr workload rating — both signals that it is built for the sustained duty of a NAS rather than a desktop.
Is the Western Digital WD Blue 1 TB a good NAS drive?
Yes — it is a 7200 RPM NAS-class drive rated for 55 TB/yr of writes per year with a 2-year warranty, which puts it firmly in NAS-duty territory rather than desktop use. Suitability depends on your bay count and RAID level; use the RAID calculator to check usable capacity and rebuild risk for your setup.
How much usable space do I get from 1 TB drives in RAID 5?
With four 1 TB drives, RAID 5 yields 3 TB usable (capacity of three drives) and survives one failure; RAID 6 yields 2 TB and survives two. More drives raise both the usable total and the rebuild risk — the calculator computes the exact figures for any count.
What is the failure rate of the Western Digital WD Blue 1 TB?
This model is not yet in the public Backblaze Drive Stats dataset, so no independent field AFR exists. The manufacturer rates it at an MTBF of 1.0M h and 55 TB/yr annual workload — both NAS-grade figures.