Features:

    The 4TB WD RE SAS 3.5" OEM Hard Drive from WD is a powerful combination of enterprise class performance and high capacity required for superior performance computing and business critical environments. The hard drive delivers transfer rates of up to 6 Gbps, sustained sequential data rates of up to 182 MBps and high random I/O rates. With a field-tested 1.4 million hours MTBF, it delivers the highest level of reliability for 24x7 operation in up to 100% duty cycle applications.
    The WD RE SAS Hard Drive's NoTouch ramp load technology ensures that the recording head never touches the disk media. This ensures significantly less wear to the recording head and media as well as enhanced drive protection in transit. The hard drive features a head positioning system with two actuators which improves positional accuracy over the data track(s). The enhanced RAFF technology monitors the drive and corrects both linear and rotational vibration in real-time. It thus provides optimum performance even in high vibration environments.
    The WD RE SAS Hard Drive's Time-Limited Error Recovery (TLER) feature prevents drive fallout caused by the extended hard drive error-recovery processes. An ultra fast 6 Gbps SAS interface enables easy integration into SAS storage subsystems. It also delivers twice the interface speed than traditional 3 Gbps SAS nearline hard drives.
    The hard drive is ideal for high capacity data center storage, demanding high performance computing and business critical environments, Storage Area Networks (SAN), Network Attached Storage (NAS), Direct Attach Storage (DAS), networked surveillance systems and cloud storage.

High Performance for Business Critical Applications

    The WD RE SAS Hard Drive delivers transfer rates of up to 6 Gbps, sustained sequential data rates of up to 182 MBps and high random I/O rates.

Designed for Quality and Reliability

    The hard drive, with a field-tested 1.4 million hours MTBF, delivers the highest level of reliability. It delivers an advanced level of reliability for 24x7 operation in up to 100% duty cycle applications.

Dual Port, Full Duplex Connectivity

    The WD RE SAS Hard Drive offers high reliability, performance and data availability by eliminating single points of failure. It is designed for leading business critical enterprise topologies.

NoTouch Ramp Load Technology

    The recording head never touches the disk media. This ensures significantly less wear to the recording head and media as well as better drive protection in transit.

Dual Stage Actuator Technology

    The hard drive features a head positioning system with two actuators which improves positional accuracy over the data track(s). The primary actuator provides coarse displacement using conventional electromagnetic actuator principles. The secondary actuator uses piezoelectric motion to fine tune the head positioning to a higher degree of accuracy.

RAFF Technology

    The enhanced RAFF technology monitors the drive and corrects both linear and rotational vibration in real-time. It thus provides optimum performance even in high vibration environments.

RAID-Specific Time-Limited Error Recovery (TLER)

    This feature prevents drive fallout caused by the extended hard drive error recovery processes common to desktop drives.

Ultra Compatible

    An ultra fast 6 Gbps SAS interface enables easy integration into SAS storage subsystems. It also delivers twice the interface speed than traditional 3 Gbps SAS nearline hard drives.