Western Digital's Red line of hard drives are a combination of the lower power and low noise features of the Green series along with the 24/7 operation and longevity of the RE series. They are not the fastest drives, but are built for use in storage servers and other always-on systems that need large drive capacity - making them a perfect choice for NAS units, home servers, and RAID configurations.
We have an article where you can read about the differences between the Red and Green series in more depth here.
We have an article where you can read about the differences between the Red and Green series in more depth here.
Model: Western Digital WD40EFRX
Specifications
| Capacity | 4000 GB |
| Rotation Speed | 5400 RPM |
| Interface | SATA 6 Gb/s |
| Cache Size | 64 MB |
| Form Factor | 3.5 Inch |
| Idle Noise | 25 dB |
| Seek Noise | 28 dB |
| Command Queueing | NCQ |
| Peak Power Draw | 4.5 Watts |
| Large Drive Mounting | No |
Performance | |
| Sequential Read (Peak) | 150 MB/s |
| Sequential Write (Peak) | 150 MB/s |
