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Chapter 4 Operating the Autoloader
Operating Modes
LTO Ultrium 8-Slot Autoloader User’s Guide 31
Random Mode
4
Random
mode is the normal operating mode when a backup software
application is being used. In
Random
mode, the autoloader loads tape
into the drive when it receives the appropriate commands from software.
To use this mode, your backup software must support autoloaders. This
support often requires an autoloader/library software module to be
installed.
Sequential Mode
4
Sequential
mode is used when autoloader software is not available. In
Sequential
mode, the autoloader loads and unloads tapes automatically.
The operator specifies which tape is to be loaded first by using the
autoloader operator's panel controls. (For more information on loading
cartridges, see Loading and Unloading a Cartridge on page 23.)
When the first tape is full or unloaded, the autoloader removes the tape
from the drive automatically, returns it to its original slot, and loads
another tape in the next higher numbered slot that is available. For
additional control over loading tapes in
Sequential
mode, you can set
Circular
and
Autoload
options from the autoloader’s front panel.
Circular Mode
4
This option is accessed from the
Configuration
menu. When
Circular
mode
is enabled, the autoloader reloads the original first cartridge in the
sequence after it cycles through all available cartridges. If
Circular
mode
is disabled, the autoloader stops loading cartridges after the last cartridge
has been unloaded and waits until you load another cartridge manually.
Autoload Mode
4
This option is accessed from the
Configuration
menu. When
autoload
mode is enabled, the autoloader automatically loads the cartridge from
the lowest numbered full slot into the tape drive when powered on. It
then follows standard sequential operation as described above.
Caution:
Use caution with circular mode, as it can overwrite data on
previously written cartridges.