                   Micropolis 1370/1570 PC PAK
                 Configuration/Specification Data Sheet

Capacity:                        Formatted

  Model            1373     1373A    1374   1374A   1375  1578-15
  Per Drive (MB)     72        91     109            145      327
  Per Sector (B)   ------------------ 512 ----------------    512
  Blocks/Track     ------------------  35 ----------------     35
  Cylinders        ----------------- 1018 ----------------   1218
  Data Heads          4         5       6       7       8      15

1370 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
  Data Transfer Rate                                       10 MHz

1370  Interface
  Compatibility                                         SCSI CCS*
  Data Transfers
   Asynchronus                                     1.6 Mbytes/sec
  Buffer                                                 16 KByte
  Defect Management                                Track oriented
  Drivers/Receivers                         Single-ended standard

1570 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
  Media Transfer Rate                                      10 MHz
1570 Interface
  Compatibility                                         SCSI CCS*
  Data Transfer
    Asynchronous                                   1.6 Mbytes/sec
  Command Overhead                     Less than 750 microseconds
  Buffer                                                 64 KByte
  Defect Management                                Track oriented
  Drivers/Receivers                         Single-ended standard

1370/1570 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
    1370                                 6 pounds(2.7 kg) nominal
    1570                               8.4 pounds(3.8 kg) nominal
Other
   Power Requirements-typical
     + 12V +/-5%                                         2.0a Avg
                                      (4.3A max. during start-up)
     +  5V =/-5%                                         2.2a Avg
   Power Dissipation-typical
     1370                                                35 Watts
     1570                                                31 Watts
   Acoustic Noise
     1370                                                    < 51
     1570                                                    < 51
1370/1570 Reliability
   MTBF
     1370                                     30,000 power-on hrs
     1570                                    150,000 power-on hrs
   MTTR                                                    15 min
   Preventive Maintenance                                    none
   Electronic Adjustments                                    none
   Data Integrity
     Automatic retry with early/late strobe and/or offset
     48-bit ECC polynomial

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

The 1370/1570 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, six hard drives, and one   
     SCSI Tape backup
  [] All hardware and software included

   Available in six formatted capacities:
                PC PAK model             Formatted Capacities
              ---------------------------------------------------
                   1373                       72 MBytes
                   1373A                      91 MBytes
                   1374                      109 MBytes
                   1374A                     127 MBytes
                   1375                      145 MBytes
                   1578-15                   327 MBytes

   Each PC PAK includes:
     [] A SCSI-based drive
     [] A SCSI to PC BUS host adapter that will support two      
        floppy,disk drives Six Hard disk drives,and SCSI tape    
        backup
     [] Cables and mounting hardware
     [] Installation software for DOS, SCO XENIX, AND NOVELL     
   NETWARE 286,V2.1
     [] 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.

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
SCO XENIX System V is an implementation of XENIX produced by The
Santa Cruz Operation, Inc.
Novell and Netware are trademarks of Novell,Inc. 