Features

• Industry standard interface
  • 50 pin ANSI SCSI-3
  • 68 pin ANSI SCSI-3
  • 80 pin ANSI SCSI-3
• 6.08/9.72 MB/s media data rate
• Sustained data rate 5.0/8.0 MB/s
• Average seek time 8.5 ms
• Average latency 5.56 ms
• Magneto resistive heads
• Connection for external LED
• Sector servo
• 448 KB multi-segmented dual port data buffer
• SCAM 2 compliant
• On-board SCSI bus terminator (50 & 68 pin models)
• Enhanced ECC on the fly
• SCAM 2 compliant (SCSI-3 models)
• Predictive failure analysis (S.M.A.R.T. compliant)

Configuration
                                DCAS-32160/DCAS-34330
  Interface                          SCSI-3
  Formated device capacity           2.16/4.33 GB
  Sector size                        512
  Data heads                         3/6
  Disks                              2/3
  Areal density (max)                1158 Mb/sq.in.
  Recording density (max)            134.6 KBPI
  Track density                      8600 TPI

Performance

  Rotational speed                   5400 RPM
  Media transfer rate (avg)          62.5-103.4 Mb/sec
  Interface transfer rate (max)      20.0-40.0 MB/sec  *1
  Latency average                    5.56 ms
  Seek time (typical)
    Average (read)                   8.5 msec
    Track to track                   3.2 ms
    Full track                       15.0 ms
  Spin up (max)                      18/20 sec

Power

  Nominal supply voltages             +5V                  +12V
  Requirements                       +5 VDC +/-5%  *2    +12 VDC +10/-8%
  Power supply ripple (0-20 Mhz max) 100 mV p-p    *3    150 mV p-p
  Population Mean
    Idle average                     0.32/0.33           0.15/0.2
    R/W average                      0.52/0.52           0.19/0.22
    Seek average                     0.41/0.41           0.28/0.32
    Start up (peak)                  0.42/0.42           1.80/1.83


Physical size

  Height                             25.4  mm
  Width                              101.6 mm
  Depth                              146.0 mm
  Weight                             610   g


Environmental characteristics


  Altitude
    Operating                             -300 to 3000 m
    Ship / store                          -300 to 12000 m

 Temperature *4
    Operating                             5 to 55 C
    Storage                               0 to 65 C
    Shipping                              -40 to 65 C
    Temperature gradient                  15 C / hour (max)
      (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 degrees C
    Shock              (half-sine wave)   30 G / 4 msec
    Vibration                             .67 G

  Non-Operating
    Ambient temperature                   -40 to 65 C
    Relative humidity  (non-condensing)   5% to 95%
    Maximum wet bulb   (non-condensing)   35 degrees C
    Shock              (half-sine wave)   75 G / 11 msec
    Vibration                             1.04 G

1. 40 MB/sec represents SCSI-3 fast 20 wide.
2. To avoid damage to the file electronics, spikes on the 5V supply must not exceed 7V and spikes on the 12V must not exceed 15V.
3. The maximum supply ripple is measured at the 5 V input on the drive.
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, below 60 C.