Western Digital RE4 Datacenter 500GB 7200RPM SATA 3Gb/s 64MB Cache 3.5" Enterprise Class Hard Drive - WD5003ABYX

Ideal for servers, video surveillance, and other demanding write intensive applications, WD RE4 7200 RPM Enterprise SATA hard drives offer up to 2 TB capacity, 64 MB cache, 4th generation vibration tolerance and 5-year limited warranty. Massive capacity - WD RE4 Enterprise SATA drives are available with up to 2 TB of cavernous capacity. Dual processor - With double the processing power, WD RE4 boasts the highest performance of any drive in the WD RE family. RAFF - 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 (2 TB only). StableTrac - The motor shaft is secured at both ends to reduce system induced vibration and stabilize platters for accurate tracking during read and write operations (1 TB and larger drives only). IntelliSeek - Calculates optimum seek speeds to lower power consumption, noise, and vibration. 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 caused 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. Third generation dynamic fly height - Each read write head’s fly height is adjusted in real time for optimum reliability. 24x7 reliability - With 1.2 million hours MTBF (tested at 100 prcent duty cycle), these drives have the highest available reliability rating on a high capacity drive.