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Appendix C Automatic Drive Cleaning
Media Movement to the Drive
102 ATL P2000 Series Automated Tape Library Users Guide
Media Movement to the Drive
3
When a cleaning cartridge is selected, the library moves it to the
drive requiring cleaning. If the movement operation is not
completed due to an unrecoverable error, the drive cleaning
operation does not proceed, and the library returns the cleaning
cartridge to its original storage element. If an unrecoverable error
occurs when moving a cleaning cartridge that prevents a
subsequent host initiated command from completing, a check
condition is set in the returned status byte and a subsequent
Request Sense returns the appropriate error (such as Transfer
Element Full). Since the drive still indicates that it needs cleaning, a
new drive cleaning operation is attempted.
If a library-initiated cleaning cartridge movement is in progress
and the host issues a command that requires the use of the
transport, the host-initiated command is held until the library-
initiated movement is completed. If an error occurs with the
library-initiated movement, the host initiated command is
processed following the error. If a subsequent error occurs, a check
condition will be set in the returned status byte and a subsequent
Request Sense will return the appropriate error code.
If the host attempts to move a cartridge to a cleaning cartridges
home location while the cleaning cartridge is being used in a
cleaning operation, the Move Medium command fails, a check
condition is set in the returned status byte and a subsequent
Request Sense returns a Cleaning Cartridge Installed status (SK=5
ASC=30 ASCQ=03). The cleaning cartridges original location is
not available until either the library determines that the cleaning
cartridges location is empty (with an Initialize Element Status) or
the library moves the cleaning cartridge to a different storage
element.
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