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DDS Tape Module
Controlling Data Compression
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DDS Tape Module
Controlling Data Compression
The DDS tape module is shipped with the following default data compression parameters:
• Data compression is enabled at power-on.
• Host control of data compression is enabled after power-on.
After the DDS tape module is powered-on, the host can control data compression via device files on HP-
UX and MPE operating systems.
Care of DDS Tape Cartridges
Handling DDS Tape Cartridges
The following precautions will ensure the data integrity and long life of DDS tape cartridges:
• Always store the cartridge in its protective case. Do not drop it or handle it roughly.
• Always keep the cartridge in a clean environment. Do not expose it to dirt, moisture, or high
humidity.
• Operate the cartridge at temperatures between +5° and +45° C (4l° to -104° F). After moving it from
one temperature extreme to another, allow it to stabilize for at least two hours before using.
• Do not place the cartridge in direct sunlight or in places where magnetic fields are present (under
telephones or near transformers).
• Do not place a label outside the recessed area on the cartridge. Doing so may cause interference with
the tape loading mechanism. Write on the label before adhering the label to the cartridge. Always
remove the old labels before adhering new ones.
• Do not touch the tape, or attempt to clean the tape path or tape guides inside the cartridge.
• Rewind the tape fully before removing the cartridge for storage.
• Do not use excessive force when inserting or removing the cartridge from the module.
• Use only data grade DDS tape cartridges, marked DDS-3, DDS-2, or DDS-1. Always label the
cartridge and record the number of uses. Discard the cartridge after 100 uses.
• Do not use a cartridge beyond its useful life.