NEW ENTRY IN APPLE PERIPHERAL INDUSTRY
AEGIS PERIPHERAL TECHNOLOGIES ENTERS $6B MARKET

April 28, 1993 -- LITTLETON, MA - Targeting a share of the growing $6
Billion computer data storage market, AEGIS PERIPHERALS INC. has emerged
as a joint venture between Advanced Media Services and Antares Technology,
both in Eastern Massachusetts.  Advertisements in trade magazines and
other publications are scheduled to begin this month, and both AEGIS and
their initial products are rapidly attracting notice.

According to Joseph P. Thomas, Vice-President and Co-Founder of AEGIS, "The
company's goal is to produce the best value in data storage solutions for
Macintosh computers.  That means high-quality, competitively-priced, and
reliable products, as well as service and support to back them up."  As
proof of this committment, AEGIS offers extended warranties, ships their
products fully tested & formatted, and includes a disk optimization
package from Software Architects Inc. with each hard drive.

AEGIS is using a direct-marketing strategy for their introductory line of
hard drives ranging from 120 Megabytes to 1.24 Gigabytes, which use proven
mechanisms and technology from Maxtor Corporation.  Other products,
including CD-ROM and removable media, are planned for later release.  With
prices below many competitors, AEGIS is measuring up as a serious
contender in the computer peripheral industry.  Contact AEGIS PERIPHERAL
TECHNOLOGIES for further information at (508) 486-0831.  


MODEL   CAPACITY   ACCESS TIME  INTERNAL  EXTERNAL  WARRANTY
-----   --------   -----------  --------  --------  --------
A120S   120Meg     15 millisec  $239.00   $305.00   2 years
A213S   213Meg     15 ms        $329.00   $399.00   2 years
A340S   340Meg     15 ms        $589.00   $659.00   2 years
A540S   540Meg     8.5 ms       $945.00 $1,029.00   2 years
A1240S  1.2 Gig    8.5 ms     $1,490.00 $1,575.00   3 years

* Extended warranties are availible
* Shipped fully tested & formatted
* All drives include FORMATTER ONE Optimization Software
* Includes all brackets, cables & hardware needed for
      installation
* 30-day Money-Back Guarantee

           VISA/MASTERCARD/AMERICAN EXPRESS
                  (800) 451-6457
            AEGIS Peripheral Technologies
-------------------------------------------------------------
AEGIS Model A120S
____________________KEY FEATURES______________________
*>150,000 hour MTBF    *64K on-board cache    *1:1 interleave
*Single-sided surface mount PCBA           *Rotary Voice Coil
*15ms access time      *Embedded SCSI controller
*Low power consumption     *Automatic Actuator Lock

________________________SPECIFICATIONS_______________________
Typical formatted storage capacity (megabytes)..........124.8
Embedded Controller......................................SCSI
Actuator Type......................................Voice coil
Number of disks.............................................2
Data surfaces...............................................4
Data heads..................................................4
Servo................................................Embedded
Tracks per surface......................................1,516
Track density (average).............................1,800 tpi
Track capacity (formatted).............................21,504
Bytes per block...........................................512
Blocks per drive......................................254,688
Sectors per track.................................42 physical

PERFORMANCE (Typical)________________________________________
Seek Times (ms)
     Track to track.........................................3
     Average...............................................15
     Maximum...............................................27
Average latency (ms)......................................8.5
Rotation speed.......................................3524 RPM
Controller overhead.......................................1ms
Data transfer rate (Mbytes per sec)
     To/from media........................1.5
     To/from buffer (SCSI)................5 (sync) 3 (async)
Start time/power up (0-3, 3524 RPM)
     Typical..........................................<5 sec
     Maximum..........................................40 sec
Stop time/power down
     Maximum...........................................3 sec
     Maximum..........................................10 sec
Start/stop cycles..................................20,000 min
Interleave................................................1:1
Buffer size...............................................64K
Interface................................................SCSI
Recording method......................................1,7 RLL
Recording density - ID.............................34,087 bpi
Flux density - ID.................................25,565 kfci

POWER REQUIREMENTS___________________________________________
MODE.........+12V DC +/-8%.......+5V DC +/-5%........Power
Spin-Up      1.0A/912 mA         240/406 mA
R/W           215/203 mA         270/354 mA          3.9/4.5W
Idle          120/204 mA          50/340 mA          1.7/4.1W

ENVIRONMENTAL________________________________________________
Temperature
Operating.................................5 deg C to 50 deg C
non-operating.................Low temperature (-40 deg C) per
                               MIL-STD-810E, method 502.3

High temperature per MIL-STD-810E, method 501.3, 
hot induced conditions

Thermal gradient.......................20 deg C per hour max.

Humidity
Operating,.........................Per MIL-STD-810E,method
non-operating,                     507.3 natural high
and storage                        humidity, cycle 3 26 deg C

Altitude (relative to sea level)
Operating...................................-200 to 10,000 ft
non-operating...................Per MIL-STD-810E,method 500.3
                            low pressure proceedure 1-storage
                                test condition 2
RELIABILITY AND MAINTENANCE__________________________________
MTBF............................150,000 (POH, power-on hours)
AFR..................< or = to 1.7% (Annualized failure rate)
Component design life.......................5 years (minimum)
AQL/DPM.............................................3,500 DPM
Preventative maintenance.................................None
Data reliability....................<10 per 100 trillion bits
                                      read (hard read errors)
Shock & vibration (typical) [Shock measured at half-sine pulse. 
Vibration measured at swept sine wave, 1 octave/min]
Non-operating shock................................70Gs, 11ms
Operating shock.......................10Gs, 11ms (without
                                      non-recoverable errors)
non-operating vibration........Per MIL-STD-810E,method 514.4,
                               basic transportation axis PSD
                               (60 minutes/axis) vertical
Operating vibration
5-20 Hz................................0.05" double amplitude
20-300 Hz..................................1 G peak amplitude
Audible noise @ 1 meter................................35 dBA
Warranty..............................................2 years
-------------------------------------------------------------
AEGIS Model A213S
________________________KEY FEATURES_________________________
*64K on-board cache    *1:1 interleave     *Rotary Voice Coil
*Single-sided surface mount PCBA            *15ms access time
*Dual drive master/slave support      *Zone density recording
*Low power consumption               *Automatic Actuator Lock

_______________________SPECIFICATIONS________________________
Typical formatted storage capacity (megabytes)..........212.8
Embedded Controller......................................SCSI
Actuator Type......................................Voice coil
Number of disks.............................................2
Data surfaces...............................................4
Data heads..................................................4
Servo................................................Embedded
Tracks per surface......................................1,698
Track density.......................................1,973 tpi
Bytes per block...........................................512
Blocks per drive SCSI (user)..........................415,600
Sectors per track (5 zones).............................48-72

PERFORMANCE (Typical)________________________________________
Seek Times (ms)
     Track to track.........................................3
     Average...............................................15
     Maximum...............................................27
Average latency (ms).....................................8.45
Rotation speed......................................3,551 RPM
Controller overhead(ms)...................................  1
Data transfer rate (Mbytes per sec)
     To/from media......................................2.83
     To/from buffer (SCSI)...............................7.5
Start time/power up (0-3,551 RPM)
     Typical.................................< or = to 6 sec
Stop time/power down
     Typical.................................< or = to 3 sec
Start/stop cycles..............................20,000 typical
Interleave................................................1:1
Buffer size...............................................64K
Interface................................................SCSI
Recording method......................................1,7 RLL
Recording density (kbpi).........................42.7 maximum
Flux density (kfci)..............................32.0 maximum

POWER REQUIREMENTS___________________________________________
MODE..........+12V DC +/-8%........+5V DC +/-5%.........Power
Spin-Up        846/700 mA           328/180 mA         NA/10W
R/W            150/185 mA           348/300 mA       3.7/3.5W

ENVIRONMENTAL________________________________________________
Temperature
Operating.................................5 deg C to 50 deg C
non-operating/storage.........Low temperature (-40 deg C) per
                                   MIL-STD-810E, method 502.3

High temperature per MIL-STD-810E, method 501.3, hot induced 
conditions

Thermal gradient.......................20 deg C per hour max.

Humidity
Operating,............................Per MIL-STD-810E,method
non-operating,                        507.3 natural high
and storage                           humidity, cycle 3

Altitude (relative to sea level)
Operating...................................-200 to 10,000 ft
non-operating...................Per MIL-STD-810E,method 500.3
                            low pressure proceedure 1-storage
                                test condition 2
RELIABILITY AND MAINTENANCE__________________________________
MTBF...........................>150,000 (POH, power-on hours)
AFR..................< or = to 1.0% (Annualized failure rate)
Component design life.......................5 years (minimum)
AQL/DPM.............................................3,500 DPM
Preventative maintenance.................................None
Data reliability....................<10 per 100 trillion bits
                                      read (hard read errors)
Shock & vibration (typical) [Shock measured at half-sine 
pulse. Vibration measured at swept sine, 1 octave/min]
Non-operating shock................................70Gs, 11ms
Operating shock...........................10Gs, 11ms (without
                                      non-recoverable errors)
non-operating vibration........Per MIL-STD-810E,method 514.4,
                               basic transportation axis PSD
                               (60 minutes/axis) vertical
Operating vibration
5-20 Hz................................0.05" double amplitude
20-300 Hz..................................1 G peak amplitude
Audible noise @ 1 meter (typical in idle mode).........35 dBA
Warranty..............................................2 years
-------------------------------------------------------------
AEGIS Model A540S
________________________KEY FEATURES_________________________
*8.5 ms read 9 ms write ave seek time (typical)
*Synchronous SCSI-2 fast transfer rates to 10Ms, 15-byte offset
*Disk tranfer rate to 40 Mbits/sec, buffer to disk
*Advanced buffer implementation
   -256 KB multi-segmented read ahead
   -Write stacking capability
   -Tagged command cueuing
*Power-down braking with positive head parking and latching
*Integrated surface-mount components for high reliability
*Brushless in-hub spindle motor
*Sealed HDA       *No sway space required  *Self-test diagnostics
*88-bit ECC for high data reliability with on the fly correction
capability
*Synchronized spindle capability for disk array applications
*Ultra-low mass rotary voice-coil actuator
*Self calibration and built in diagnostics
*Allows various sector sizes
*Firmware downloadble via SCSI interface
*16-bit Mhz processor
*Hard sectored zoned density recording
*8-zone recording format
*1,7 RLL data encoding for improved window margins

PERFORMANCE__________________________________________________
Typical formatted storage capacity (megabytes)
     Per drive (Mbytes)...................................540
     Per sector (bytes)...................................512
     Spare capacity (Mbytes)..............................6.2
SCSI-bus tranfer rate (Mbytes/sec)
     Asynchronous...................................Up to 5.0
     Synchronous...................................Up to 10.0
Disk transfer rate (Mbits/sec)..........................23-40
Seek time (msec), typical
     Read.................................................8.5
     Write..................................................9
     Track-to-track......................................<1.5
     Maximum...............................................20
SCSI Command overhead (usec)....................< or = to 300
Rotational Speed (rpm).........................6,300 +/- 0.5%
Average latency (msec)...................................4.76

FUNCTIONAL___________________________________________________
Data zones..................................................8
Bit density (Kbpi)......................................37-42
Track density (tpi).....................................2,600
Disks.......................................................4
Data heads..................................................7
Servo heads.................................................1
Physical tracks........................................16,968
Sectors/track (5 zones).................................46-78
Physical cylinders......................................2,616

ENVIRONMENTAL________________________________________________
Temperature Limits
     Operating............................5 deg C to 55 deg C
     non-operating/storage.................-40 deg C 65 deg C
     Temperature gradient/hr......................20 deg C/hr
Relative Humidity Limits (non-condensing)
     Operating.......................................5 to 95%
     Non-operating...................................5 to 95%
     Maximum gradient/hr..................................20%
     Maximum wet bulb..............................27.6 deg C
Shock (Gs)
     Non-operating.........................................70
     Operating (no erros)...................................3
     Operating (recoverable errors)........................10
Power dissipation (typical)...........................9 watts
Audible noise @ 1 meter................................40 dBA
Power requirements
     +12 VDC +/-5%, .54A(typical)
     1.5A (maximum)
     +5 VDC +/- 5%. .50A (typical)

RELIABILITY__________________________________________________
MTBF............................................300,000 hours
PM...............................................Not required
MTTR...............................................30 minutes
Component design life................................>5 years
Recoverable error rate............< or = to 10 in 10 trillion
Unrecoverable error rate.......< or = to 10 in 10 quadrillion
Seek error rate....................< or = to 10 in 10 million
Warranty..............................................2 years
-------------------------------------------------------------
AEGIS Model A1240S
________________________KEY FEATURES_________________________
*8.5 ms read 9 ms write ave seek time (typical)
*SCSI command overhead of < or = to 300 usec
*Synchronous SCSI-2 fast transfer rates to 10Mbytes/sec, 15-byte offset
*Disk tranfer rate to 44.4 Mbits/sec, buffer to disk
*Advanced buffer implementation
   -256 KB multi-segmented read ahead
   -Write stacking capability
   -Tagged command cueuing
*Power-down braking with positive head parking and latching
*Integrated surface-mount components for high reliability
*Brushless in-hub spindle motor
*Sealed HDA
*8-point shock mounting system
*88-bit ECC for high data reliability with on the fly correction
capability
*Self-test diagnostics
*Mechanically and thermally isolated head-disk environment
*Exceptionally quiet operation
*Synchronized spindle capability for disk array applications
*Ultra-low mass rotary voice-coil actuator
*Self calibration and built in diagnostics
*Mounts in any orientation
*Allows various sector sizes
*Firmware downloadble via SCSI interface
*16-bit/35-Mhz processor
*Hard sectored zoned density recording
*8-zone recording format
*1,7 RLL data encoding for improved window margins

_______________________SPECIFICATIONS________________________

PERFORMANCE__________________________________________________
Typical formatted storage capacity (megabytes)
     Per drive (Mbytes).................................1,240
     Per sector (bytes)...................................512
     Spare capacity (Mbytes)..............................7.7
SCSI-bus tranfer rate (Mbytes/sec)
     Asynchronous...................................Up to 5.0
     Synchronous...................................Up to 10.0
Disk transfer rate (Mbits/sec)......................22.7-44.7
Seek time (msec), typical
     Read.................................................8.5
     Write..................................................9
     Track-to-track......................................<1.5
     Maximum...............................................20
SCSI Command overhead (usec)....................< or = to 300
Rotational Speed (rpm).........................6,300 +/- 0.5%
Average latency (msec)...................................4.76

FUNCTIONAL___________________________________________________
Data zones..................................................8
Bit density (Kbpi)......................................41-43
Track density (tpi).....................................2,600
Disks.......................................................8
Data heads.................................................15
Servo heads.................................................1
Physical tracks........................................37,689
Sectors/track (5 zones).................................44-85
Physical cylinders......................................2,512

ENVIRONMENTAL________________________________________________
Temperature Limits
     Operating............................5 deg C to 55 deg C
     non-operating/storage.................-40 deg C 65 deg C
     Temperature gradient/hr......................20 deg C/hr
Relative Humidity Limits (non-condensing)
     Operating.......................................5 to 95%
     Non-operating...................................5 to 95%
     Maximum gradient/hr..................................20%
     Maximum wet bulb..............................27.6 deg C
Shock (Gs)
     Non-operating.........................................50
     Operating (no erros)...................................3
     Operating (recoverable errors)........................10
Power dissipation (typical)..........................13 watts
Audible noise @ 1 foot.................................30 dBA
Power requirements
     +12 VDC +/-5%, .79A(typical)
     2.5A (maximum)
     +5 VDC +/- 5%. .81A (typical)

RELIABILITY__________________________________________________
MTBF............................................300,000 hours
PM...............................................Not required
MTTR...............................................30 minutes
Component design life................................>5 years
Recoverable error rate............< or = to 10 in 10 trillion
Unrecoverable error rate.......< or = to 10 in 10 quadrillion
Seek error rate....................< or = to 10 in 10 million
Warranty..............................................3 years
_____________________________________________________________

The AEGIS line is availible only through AEGIS PERIPHERAL TECHNOLOGIES. 
Drives are shipped fully tested & formatted.  All necessary brackets,
hardware, and cables are included, as well as FORMATTER ONE disk
optimization software from Software Architects,Inc.  Extended warranties
are availible.  30-day money-back guarantee.  Call (800) 451-6457 for more
information or to order your "cutting edge" data storage peripherals. 
Visa/Mastercard/Discover/American Express.

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