Download OptiPac 7618F User`s Manual

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Magneto-Optical Technology
INTRODUCTION
Use of the OptiPac other than as prescribed in this manual may result in
exposure to hazardous invisible laser radiation if the case is open during
operation. Avoid direct exposure to laser radiation. Do not operate the
OptiPac while the cover is removed.
Compatibility
The OptiPac 7618F drives can read and write to 650MB MO cartridges
as well as the 1.3GB cartridges. The 650MB cartridges have a capacity
of 325MB/side. If you are attaching the OptiPac to a system which
contains drive specification tables, such as HP-UX, you will need to
create separate device files for the two different cartridges.
Magneto-Optical
Technology
All of the Bering OptiPac disk drives are based on magnetic and optical
technology. Like hard disks, a Magneto-Optical drive writes data to the
cartridge using a strong magnet that changes the magnetic fields at
specific locations from 1's to 0's and vice versa. But because of the
polycarbonate surface of the cartridge, the magnet is not powerful
enough to change the polarity of a bit by itself. This is where the optical
part of the write process comes in. In order for the magnet to change
the polarity of a bit, the area must be heated to a high temperature by
a focused, fine-point laser.
Because of the Polycarbonate substrate on the cartridge, data stored on
Magneto-optical cartridges is highly secure for a long period of time.
The estimated storage life of data stored on this media is greater than
twenty years. Also the magnetic head does not “float” next to the surface
such as fixed disks. This means it is virtually impossible for the head
to crash.
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OptiPac 7618F User's Manual