WD RE4 WD2503ABYX - Hard drive - 250 GB - internal - 3.5" - SATA 3Gb/s - 7200 rpm - buffer: 64 MB

Key Features and Benefits:

• 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.
• Dual processor
  With double the processing power, WD RE4 boasts the highest performance of any drive in the WD RE family.
• 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.
• 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.
• IntelliSeek
  Calculates optimum seek speeds to lower power consumption, noise, and vibration in active seek modes without degrading performance.
• 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.
• Third generation dynamic fly height
  Each read-write head's fly height is adjusted in real time for optimum reliability.
• Thermal extended burn-in test
  Each drive is put through extended burn in testing with thermal cycling to ensure reliable operation.
• 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.
• Active Power Save
  Deliver best-in-class power consumption through advanced WD firmware that conserves power in active seek modes without degrading performance.