HP A3716A DDS-3 Autoloader User's Manual - 3716-96001

Using Your Autoloader
Autoloader Modes of Operation
3-8
q To force ejection, hold the Eject button down for at least 5 seconds or press the
Eject button three times within one minute. The autoloader responds as
follows:
a The front panel display will show Force Eject.
b The autoloader waits 35 seconds to give the normal eject procedure a chance
to occur.
c Once this time has elapsed, if there is a cartridge loaded in the drive it is
immediately unloaded, regardless of what operation the drive was
performing. The cartridge is then returned to its slot in the magazine, and the
drive is reset as though the power had been cycled.
Because the forced ejection may interrupt any operation, it is possible that
the drive will not write an EOD (End of Data) mark before the cartridge is
ejected. This will cause loss of data and leave the cartridge with an invalid
format.
d If no cartridge is loaded in the drive, the autoloader assumes that you want
to eject the magazine. Following the 35-second pause, it does this. The
autoloader is then reset as though power had been cycled.
Note A forced eject will abort any SCSI operations that may be in progress on the
autoloader and overrides any SCSI PREVENT MEDIA REMOVAL that is in effect.
Autoloader Modes of Operation
The HP A3716A may be operated in either stacker or random mode.
Note HP Series 700 and 800 systems only support random mode.
The mode is initially determined by what happens after you insert a magazine:
n If the host sends a command (MOVE MEDIUM) to move a cartridge from the
magazine to the drive, the autoloader goes into random mode.
n If you select a cartridge by pressing the Select button and then load it by
pressing the Load Cartridge button, the autoloader goes into stacker mode.
Random Mode
In random (or changer) mode, the host computer controls the movement of
cartridges between magazine and drive. For example, suppose the cartridge
from slot 3 is currently loaded and you want to restore a particular file from a
particular backup. The software knows that the file is on tape 1, so the host
instructs the autoloader to replace cartridge 3 in the magazine and then loads