-=<<< NAUTILUS SOFTWARE >>>=-
                            103 West Street
   VOICE:                   Iola, Ks. 66749                    DATA:
316-365-5794                                               316-365-7631
                   -:- A Software Clearing House -:-
                                                             01/01/86

           ANNOUNCING THE NEWEST INNOVATIONS IN MINIATURIZED
                 - REMOVABLE OPTICAL DISK TECHNOLOGY -

         Nautilus  BACKPAC 100/Exec:   The  new  200 MB removable cartridge 
Optical Disk drive, exclusivly for the Nautilus Executive computer system.

      Our  BACKPAC 100/Exec  5  1/4"  Optical  Disk Drive is the first of a 
family  of  high-reliability,  low cost, direct-access mass storage devices 
for   business  and  professional  systems.   With  200  million  bytes  of 
formatted  and certified capacity, a data transfer rate of 2.5 million bits 
per  second,  and  an average access time of less than 200 miliseconds, the 
The BACKPAC 100/Exec Optical drive's performance is comparible to Winchester-
technology  magnetic  disk  drives and superior to all floppy disk and tape 
cassette   drives.    OROM   capability   for   read-only   memory  storage 
applications  enhances  the BACKPAC 100/Exec's versatility, convenience, and 
value   for   system   designers   and   end   users.    Designed-in   high 
quality/reliability,  a removable disk cartridge, and a stable non-erasable 
storage  medium make the BACKPAC 100/Exec 5 1/4" optical disk drive the mass 
storage peripheral of choice for a broad spectrum of applications.

PRICE:      $3995 w/Controller Card & Bus Extender
CARTRIDGES: $125 each (100 Meg. / 1-sided)
            $B/O each (200 Meg. / 2-Sided)

APPLICATIONS:

      *  On-Line  Direct-Access Storage of Local and Distributed Databases, 
Systems  and  Applications  Software  (including documentation), and Active 
Records -- Ideal for the Electronic File Cabinet of the Automated Office.

      *  On-Line  or Off-Line Secure Storage of Important/Critical Business 
and Professional Records -- Temporary or Permanent.

      *  Backup/Recovery  and  Archiving  Alternative  to  Floppy  Disk and 
Cassette Tape Drives.

      *  Support  Peripheral for CAD/CAE, Communications (FEP's, Electronic 
Switches, and Digital PBX's), and Fault-Tolerant Systems.

      *  Data  Transport and Tape Library Compression, without the problems 
associated with tape and magnetic-based drives.



LASER DRIVE PERFORMANCE SPECIFICATIONS:

Capacity (Formated and Certified) -                         200 Megabytes
Data Transfer Rate -                                        2.5 Mbits/sec
 
Access Times:
 
  Average         -                                         200 ms (max.)
  Track to Track  -                                         1 msec
  Average Latency -                                         16.7 msec
  
Rotational Speed  -                                         1800 RPM


FUNCTIONAL SPECIFICATIONS:

Number of User Tracks   -                                   29,800
Number of Sectors/Track -                                   32
User Data/Track         -                                   8192 bytes
User Data/Sector                                            256  bytes


RELIABILITY SPECIFICATIONS:

Mean Time Between Failure (MTBF) -                          15,000 Hrs
Mean Time to Repair (MTTR)       -                          15 Minutes
Preventive Maintenance (PM)      -                          None

Error Rates:
  Positioning                -                              10 -6
  Read (With ISI Controller) -                              10 -12


PHYSICAL SPECIFICATIONS:

Mechanical Dimentions (Excluding Faceplate) -               3.25" High
                                                            5.75" Wide
                                                            8.00" Deep

Weight -                                                    4.5 Pounds
 
Environment:
  Air Temperature (Operating)     -                         60-90 D. Far.
                  (Non-Operating) -                         50-110D. Far.
 
  Humidity                        -                         8% to 80%

Electrical:
  +12V DC +/- 5% @1.37A(typ.), 3.0A(max.,start)
  + 5V DC +/- 5% @ .7 A(typ.), 1.0A(max.,start)
  Power Requirement - 20 watts

PRICE:     $3995 For Drive w/Interface & Bus Extender Card
           $ 125 per 100 Megabyte Cartridge
           $ B/O per 200 Megabyte Cartridge