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18628Western Digital 250 Gb - 7200 RPM - 8Mb buffer
CAVIAR 250GB UATA100 8.9MS 7200RPM 8MB CACHE [WD2500JB]
55,8767,602 2542 727

Western Digital 250 Gb - 7200 RPM - 8Mb buffer



  • Western Digital's Special Edition hard drives are designed to maximize desktop computer performance for activities requiring high-performance storage such as computer gaming, digital video editing, and file server applications. Offering the largest capacities, the Western Digital's Special Edition family is equipped with an 8 MB buffer - the largest buffer available today in a desktop EIDE hard drive, delivering data to users faster than any hard drive in its class.
  • The Special Edition hard drive provides a higher percentage of cache hits and significantly faster time to data than industry-standard 2 MB versions. Within the complex operations of hard drives, the buffer is used to hold the results of recent reads from the disk, and also to "pre-fetch" information that is likely to be requested in the near future. The use of an increased buffer improves the performance by reducing the number of physical accesses to the disk and allowing data to stream from the disk uninterrupted by mechanical operations.


  • Specificaties :: Western Digital 250 Gb - 7200 RPM - 8Mb buffer
    Overview
    Average Seek Time8.9 ms
    Buffer Size8 MB
    Capacity250 GB
    Connector40 pin IDC
    Data Transfer Rate100 MBps
    Dimensions (WxDxH)10.2 cm x 14.7 cm x 2.6 cm
    Form Factor3.5" x 1/3H
    Interface TypeATA-100
    Manufacturer Warranty3 years warranty
    Product DescriptionWestern Digital Caviar WD2500JB Special Edition - hard drive - 250 GB - ATA-100
    Spindle Speed7200 rpm
    TypeHard drive - internal
    Weight0.6 kg
     
    Details
     Environmental Parameters
    Humidity Range Operating5 - 95%
    Max Operating Temperature55 °C
    Min Operating Temperature5 °C
    Shock Tolerance65 g @ 2ms half-sine pulse (operating) / 250 g @ 2ms half-sine pulse (non-operating)
    Sound Emission34 dB
    Vibration Tolerance0.75 g @ 20-300 Hz (operating) / 4 g @ 20-500 Hz (non-operating)
     Expansion / Connectivity
    Compatible Bays1 x internal - 3.5" x 1/3H
    Interfaces1 x IDE/ATAPI - 40 pin IDC
     General
    CompatibilityPC
    Depth14.7 cm
    Device TypeHard drive - internal
    Height2.6 cm
    Weight0.6 kg
    Width10.2 cm
     Hard Drive
    Buffer Size8 MB
    Capacity250 GB
    Compliant StandardsS.M.A.R.T.
    Connector40 pin IDC
    FeaturesData Lifeguard, Shock Guard
    Form Factor3.5" x 1/3H
    Interface TypeATA-100
     Manufacturer Warranty
    Service & Support3 years warranty
    Service & Support DetailsLimited warranty - 3 years
     Performance
    Average Latency4.2 ms
    Drive Transfer Rate100 MBps (external) / 93.5 MBps (internal)
    Seek Time8.9 ms (average) / 21 ms (max)
    Spindle Speed7200 rpm
    Track-to-Track Seek Time2 ms
     Reliability
    Non-Recoverable Errors1 per 10^14
    Start / Stop Cycles50,000
     Software / System Requirements
    Software IncludedDrivers & Utilities