Apple Workgroup Server 8550 - Manual (Page 82)

Locking a cassette
You can lock a DDS cassette by sliding the tab on the back of the cassette so
that the hole is visible. Once a tape cassette is locked, data can be read from
the cassette but not written to it.
Avoiding high humidity
Whenever your tape drive detects water condensation, both status lights
glow solid amber. This warning signal cancels any commands in progress.
Furthermore, any commands that access the tape are rejected. The tape
drive then unthreads the tape to prevent tape and tape-head damage.
To minimize the chance of condensation, adhere to the environmental
require-ments described in the safety, health, and maintenance information
in the setup guide that came with your server and follow these general
cassette guidelines:
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Use tape cassettes at temperatures between 5˚ C (40˚ F) and 40˚ C (104˚ F).
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If you expose the tape cassettes to temperatures outside the operating
limits, you can stabilize them by leaving them in the proper operating
temperature for a minimum of two hours.
Follow these guidelines to avoid temperature problems:
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Avoid exposing cassettes to severe temperature conditions. For example,
don’t store a cassette in a car in bright sunlight.
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Avoid transferring data to or from a tape cassette when the temperature
is changing by more than 10˚ F per hour (roughly 5˚ C per hour).
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