Apple has announced a 5.25-inch 160MB SCSI hard disk drive. The internal
configuration is optional in the Macintosh II and Macintosh IIx. In addition,
upgrade kits will be available for these systems.
This 160MB SCSI hard disk drive has been tested to support the Macintosh OS
and A/UX. However, this drive can not be used with the Apple II family.
Like other 5.25-inch drives, this drive does not fit in the Macintosh IIcx
or the compact Macintosh systems. However, as an external drive, it works
with any Macintosh that has a SCSI port.
Technical specifications:
Capacity
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Formatted data capacity: 160MB
Data surfaces: 5
Heads per surface: 1
Block size: 512 bytes
Total disk blocks: 327,780
Characteristics
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Average seek time: 18 milliseconds
Transfer rate: up to 1.25MB/sec
Rotation speed: 3,600 RPM
Startup: 20 seconds
Spindown: 20 seconds
Physical
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Form Factor: 5.25-inch, half height
Weight: 2.09 kg (4.6 lbs) - internal configuration
Copyright 1989, Apple Computer, Inc.