User's Guide

Page 32 DDS-4 SCSI Interface Manual, Rev. B
When the magazine has been completely moved into the loader, the process of
initialization begins, in which the magazine is scanned to determine which slots
contain cassettes. In fact, initialization is performed at three times:
• Insertion of a magazine into a drive that is already powered up
• Power up with a magazine already inside
• Receipt of an Initialize Element Status SCSI command
Front Panel Operation
The front panel contains an LCD screen that displays the autoloader status. There
are also three pushbuttons, Eject, Select, and Enter, which are used to perform
various operations:
• Display drive firmware version and SCSI ID
• Select language for LCD messages
• Adjust LCD contrast
• Enable and disable Autoload mode
• Load a specific cassette
• Eject the magazine
• Lock and unlock the door
The menu can only be accessed when there is no magazine in the drive. Loading
cassettes and ejecting the magazine can be performed only when there is a
magazine in the drive.
To access the menu, first eject the magazine, if any, and then press and hold the
Select button until the menu appears on the LCD; this will take about five seconds.
Then press the Select button momentarily to scroll among the menu items. To
choose one, press the Enter button. To return to the regular display, momentarily
press the Eject button.
Cassette Selection
When the Select and Enter buttons on the Autoloader are used to select a cassette
in the magazine, it is loaded into the drive. If there is already a cassette in the drive,
it will first be placed back in the slot from which it came. If the drive is executing a
SCSI command, such as a Read or Write, that and all pending commands will be
terminated with Not Ready / Operator Medium Removal Request (02/5A/01) status.
Automatic Loading Mode
The front panel can be used to enable or disable automatic loading mode. When
enabled, certain events cause the next cassette in the magazine to be loaded
without either a SCSI or front panel command:
• Ejection of a cleaning cassette after a successful cleaning. (Cleaning failure due
to an expired cleaning tape will not autoload the next tape.)
• Ejection of a data cassette by a SCSI Unload command to LUN 0.
• Insertion of a magazine. After the magazine is scanned, the first cassette will be
loaded.