WD Re 4TB Specifications
The WD Re provides a sustained transfer rate of 171 MB/s for SATA and 182 MB/s for the SAS model. This is delivered via five 800GB platters at 7,200 RPM and a 6Gb/s connection. WD Re series of HDDs comes in a standard 3.5" form factor.
For typical workloads, the drive pulls an average of 10.2 Watts for sequential read, and 9.7 Watts for sequential write workloads. Random read/write power consumption comes in at 10.9 Watts, and the idle voltage is spec'd at 8.6 Watts.
An MTBF of 1.2 million hours leads to an Annual Failure Rate (AFR) of .7 and a five-year warranty. The Re is rated for 600,000 load/unload cycles in a controlled environment. A multi-axis shock sensor helps to adjust the drive during shock and high vibration events, while the NoTouch ramp load technology ensures that the recording head never touches the platters, resulting in less wear to both the head and drive media.
The Re is designed for up to 550TB of use per year, which is significantly higher than the workload tolerance of the Se and Red drives.