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The WD Se 4TB SATA 6 Gb/s HDD from Digital Watchdog is used to expand the storage capacity of Blackjack E-Rack NVRs. Thanks to the SATA 6 Gb/s interface and 7200 rpm rotational speed, data can be quickly accessed.
The hard drive features dual processors as well as RAFF technology aiding in performance enhancements when used in high vibration environments. The head on this drive virtually never touches the disk through the use of NoTouch Ramp Loading Technology and a multi-axis shock sensor.
Note: Expansion up to 32TB for BJE2U, 48TB for BJER2U, 64TB for BJER3U, and 144TB for BJER4U
Designed for Quality and Reliability
All drives undergo at least 5 million hours of functional testing, and over 20 million hours of additional testing under actual workloads in actual server and storage systems.
Twice the processing power to maximize performance.
RAFF Rotational Vibration Cancellation Technology
Enhanced RAFF technology includes sophisticated electronics to monitor the drive and correct both linear and rotational vibration in real time. The result is a significant performance improvement in high vibration environments over the previous generation of drives.
Dual Actuator Technology
A head positioning system with two actuators that 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.
The motor shaft is secured at both ends to reduce system-induced vibration and stabilize platters for accurate tracking during read and write operations.
Multi-Axis Shock Sensor
Automatically detects the subtlest shock events and compensates to protect the data.
RAID-Specific, Time-Limited Error Recovery (TLER)
Prevents drive fallout cause by the extended hard drive error-recovery processes common to desktop drives.
NoTouch Ramp Load Technology
The recording head never touches the disk media ensuring significantly less wear to the recording head and media as well as better drive protection in transit.
Thermal Extended Burn-In Test
Each drive is put through extended burn-in testing with thermal cycling to ensure reliable operation.
Dynamic Fly Height Technology
Each read-write head's fly height is adjusted in real time for optimum reliability.
Table of Contents
For Use with
Blackjack E-Rack NVRs
Expansion up to 32TB for BJE2U, 48TB for BJER2U, 64TB for BJER3U, and 144TB for BJER4U