                   Micropolis 1350/1550 PC PAK
                          Specifications

Performance Advantage Kits
  The industry's first easily installed and fully featured 5 1/4
  inch, high performance ESDI-based disk drives for IBM PC/XT PC/AT
  and compatibles.

***** Novell Labs Tested and approved NetWare Compatible*****

The 1350/1550 Performance Advantage Kits offer:
  [] Novell Netware 286 V2.1, Xenix and DOS compatibility
  [] More than twice the performance  of ST-506 drives
     10 MHz data transfer rate
     23 and 18 millisecond average access times
  [] Supports 1:1 Interleave for faster data throughput
  [] Supports two floppy disk drives, two hard disk drives
  [] All hardware and software included

Available in six formatted capacities:

  PC PAK Model             Formatted Capacities
  ------------             --------------------
    1353                         75 MBytes
    1353A                        94 MBytes
    1354                        113 MBytes
    1354A                       131 MBytes
    1355                        150 MBytes
    1558-15                     337 MBytes

Each PC PAK includes:
  [] A ESDI-based drive
  [] A ESDI Controller for the PC/AT BUS that will support two   
     floppy disk drives, and two hard drives
  [] Cables and mounting hardware
  [] Installation software for DOS, and NOVELL NETWARE 286,V2.0
     and V2.1(V2.0 only supports up to 255 MBytes per drive.
  [] Complete,easy to follow hardware and software installation 
     guides
All this backed by a full one-year warranty.

For more information on this and other Micropolis disk drives,
contact a Micropolis Sales Office for your nearest Authorized
Distributor.

Formatted Capacity:                Model Number

  Model            1353   1353A    1354   1354A   1355    1558-15
  Total Mbytes       75      94     113     131    150        337
  Bytes Per Sector ---------------- 512 ----------------      512
  Sectors Per Track----------------  36 ----------------       36
  Cylinders        --------------- 1022 ----------------     1222
  Data Heads          4       5       6       7      8         15

1350 Performance

  Seek Time (including settling time)     Track-to-Track   5 msec
                                          Average         23 msec
                                          Maximum         50 msec
  Latency Time (Average)                                8.33 msec
  Rotational Speed                                       3600 rpm
  Media Transfer Rate                                      10 MHz

1550 Performance

  Seek Time (including settling time)     Track-to-Track   4 msec
                                          Average         18 msec
                                          Maximum         40 msec
  Latency Time(average)                                 8.33 msec
  Rotational Speed                                       3600 rpm
  Data Transfer Rate                                       10 MHz

Features

  ESDI Serial Mode
  Hard Sectoring
  Servo locked data
  Extensive status and diagnostic information

1350/1550 Physical

  Form Factor      (Industry-standard for 5 1/4 inch full height)
    Height                                   3.25 inches(82.6 mm)
    Width                                     5.75 inches(146 mm)
    Depth                                     8.00 inches(203 mm)
  Weight
    1350                                 6 pounds(2.7 kg) nominal
    1550                               8.4 pounds(3.8 kg) nominal

Power Requirements
  1350
    +12V +/-5%                                           2.0A Avg
                                      (4.3A max. during start-up)
    +5V +/-5%                                            2.2A Avg
    Power Dissipation,typical                            32 Watts
  1550
    +12V +/-5%                                           2.0A Avg
                                      (4.3A max. during start-up)
    +5V +/-5%                                            1.5A Avg
    Power Dissipation-typical                            29 Watts

OTHER

  Acoustic Noise                                         < 51 dBA
  Mounting standard 5 1/4 inch disk drive,any orientation

1350/1550 Reliability
  MTBF
    1350                                      30,000 power-on hrs
    1550                                     150,000 power-on hrs
  MTTR                                                     15 min
  Preventive Maintenance                                     none
  Electronic Adjustments                                     none
  Error Rates
    Soft Errors                         <= 10 in 10^10 MBits read
    Hard Errors                         <= 10 in 10^13 MBits read
    Seek Errors                               <= 10 in 10^7 seeks

IBM,IBM Personal Computer AT, and IBM Personal Computer XT are
registered trademarks of International Business Machines
Corporation.
XENIX IS A registered trademark of Microsoft Corporation
Novell and Netware are trademarks of Novell,Inc. 