750MB 2.5" IDE IBM HD Model DPRA20810 - Used

$24.99
IMB Model DPRA-20810 Features Magneto resistive heads No-ID physical format Closed loop actuator servo (embedded sector servo) PIO data transfer - mode 3 DMA data transfer Single word mode - mod...
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Condition: Used/30Day

IMB Model DPRA-20810


Features


  • Magneto resistive heads
  • No-ID physical format
  • Closed loop actuator servo (embedded sector servo)
  • PIO data transfer - mode 3
  • DMA data transfer
    Single word mode - mode 2
    Multiword mode - mode 1
  • Interleave factor 1:1
  • Enhanced ECC implementation
    128 bit reed solomon code operating 10-bit symbol
    Multi-burst on-the-fly correction (up to 4 symbols in a sector)
  • Automatic retry on errors
  • Self diagnostics during power on
  • Power saving modes
  • All axis (6 directions) mounting
  • No preventive maintenance



Configuration


  • Interface IDE
  • Formated capacity 810/1215 MB *1
  • Sector size 512 bytes
  • Sectors / track (logical) 63
  • Head number (logical) 16
  • Cylinder number (logical) 1572/2358
  • Customer usable data sectors 1,584,576/2,376,864
  • Disks 2/3
  • Recording zones 8
  • Areal density average (max) 700 Mb/sq.in.
  • Recording density (max) 110.3 Kbpi
  • Track density (max) 6350 TPI



Performance


  • Rotational speed 4900 RPM
  • Media transfer rate 36.3(id),57.0(od) Mbits/sec
  • Data buffer read buffer 32 KB write cache 32 KB
  • Interface transfer rate (max) 10 MB/sec
  • Latency average 6.1 msec
  • Seek time (typical)

    • Average (read) 12 msec
    • Track to track 4 msec
    • Full track (read) 23 msec

  • Spin up (typical) 3.0 sec



Power


  • Requirements +5 VDC *2
  • Power supply ripple (0-20 Mhz) 100 mV p-p max *3
  • Dissipation (typical)

    • Idle (ave) 1.3 Watts 0.26 A RMS
    • Read/write 2.6 Watts 0.52 A RMS
    • Seek (ave) 2.6 Watts 0.52 A RMS
    • Shutdown 0.1 Watts 0.02 A RMS
    • Start up (average to ready) 3.5 Watts 0.70 A RMS
    • Start up (maximum peak) 4.7 Watts 0.94 A RMS

  • Supply rise time 7 - 100 ms



Physical size


  • Height 17.0 mm
  • Width 69.85 mm
  • Depth 100.2 mm
  • Weight 186 g (max)



Environmental characteristics


  • Altitude

    • Operating -300 to 3,000 m
    • Ship / store -300 to 12,000 m

  • Temperature *4

    • Operating 5 to 55 C
    • Storage 0 to 65 C
    • Shipping -40 to 65 C
    • Temperature gradient (max) 20 C / hour
      (Operating, storage or shipping)

  • Operating

    • Ambient temperature 5 to 55 C
    • Relative humidity (non-condensing) 8 to 90 %
    • Maximum wet bulb (non-condensing) 29.4 C
    • Shock *5 (half-sine wave) 100 G / 2 msec
    • Vibration random (RMS) 0.67 G (5-500 Hz)

  • Non-operating

    • Ambient temperature -40 to 65 C
    • Relative humidity (non-condensing) 5% to 95%
    • Maximum wet bulb (non-condensing) 40 C
    • Shock *6 (half-sine wave) 300 G / 2 msec
    • Vibration random (RMS) 1.04 G (2-200 Hz)



    Notes:


    1. 1 MB = 1,000,000 bytes
    2. The drive shall not incur damage for an over voltage condition of +25% (maximum duration of 20 ms) on the 5 V nominal supply.
    3. The maximum supply ripple is measured at the 5 V input on the HDD.
    4. The system is responsible for providing sufficient air movement to keep the surface temperature , measured at the center of the drive's top cover.
    5. The drive will withstand a 100 G half-sine wave shock pulse for a 2 msec duration. The drive will experience no data loss or permanent damage during idle, seek or read modes when experiencing no more than a shock pulse of 100 G half-sine wave for a 2 ms duration.
    6. The drive will withstand, with no permanent damage or degradation in performance, a 300 G half-sine wave pulse of 2 ms duration.

IBM
HDIM750MB-AI-U
4 Items
2020-02-20
Used

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