WD Se Specifications
The WD Se comes in a 3.5" form factor and operates at 7,200 RPM. All capacities have the same 64MB cache buffer. The SATA 6Gb/s HDD is geared for scale out environments and is suitable for a large number of applications. For many NAS users, the WD Red series has been very popular, but suffers from the notable setback of being limited to use in settings with five or fewer HDDs. While these smaller NAS units are commonplace in SMB and SOHO environments, there is a need for a more scalable solution for datacenter use. The WD Se can scale all the way up to 24+ NAS ports.
The WD Se series is validated with extended burn-in testing with thermal cycling prior to use to ensure reliability. RAFF (Rotary Acceleration Feed Forward) works in conjunction with the Multi-Axis Shock Sensors to provide dual axis shock detection, allowing the Se to adjust to vibrations. In high-vibration datacenter environments, this is an important feature. StableTrac also helps mitigate the impact of vibration by securing the motor shaft at both ends.
Dual Actuator Technology fine tunes head positioning to increase accuracy. This works in concert with the Dynamic Fly-height technology to adjust the head of the drive dynamically to provide the best performance.
TLER (Time-Limited Error Recovery) allows for improved error handling in a RAID/NAS environment. The WD Se also features a self-encryption option and dual processors for enhanced performance.
The WD Se has a lower MTBF (800,000 hours) than the Red and Re models. The Se utilizes the Advanced Format 4K sectors and includes features not found on the WD Red series of HDDs. For those looking for a higher capacity Red, the Se makes a good fit with its option of a 4TB model. The Se also features a lower NRE of 1E14.