Operation and Maintenance
Operational
Modes
AUTOLOADER LTO3 – User Reference Manual Rev. 1.01
TANDBERG DATA
Page 3 3 of 79
( 6 ) ENTER, button [
↵
]
It is used in interaction mode. Push the enter button to go to a sub menu or to force a robotic
action.
( 7 ) NEXT, button [+]
It is used in interaction mode to navigate through menu items.
( 8 ) PREVIOUS, button [–]
It is used in interaction mode to navigate through menu items.
( 9 ) CANCEL, button [X]
It is used in interaction mode. Push the CANCEL button to cancel a user action and return to the
last menu item.
8.4 Operational Modes
The operational modes affect how the autoloader loads cartridges into the drive. The different modes
can be selected at the configuration menu in the OCP. They are stored persistent in the NVRAM and
are valid also after Power ON.
There are 2 basic modes that the OCP operates in. First is the User Interaction mode. This mode is
employed when a user is pushing buttons on the OCP (Operator Control Panel). The second mode is
the System Driven mode. This is the normal mode of operation. In this mode, the OCP displays status
associated with the actions that were caused from commands issued via the Drive’s serial interface.
Actions like loading, rewinding or moving tape will be displayed. When an OCP button is pressed and
released, the OCP automatically transitions to User Interaction mode. User Interaction mode will
continue until 3 minutes after a user stops pushing buttons, or the requested robotic action stops;
whichever is longer. At this time the OCP will return to System Driven mode.
If necessary, the OCP will automatically transition to the System Driven mode. When this occurs, the
LTO3 Autoloader must remember what the User was doing before the display mode changed.
Therefore the next button pressed will only transition the OCP to the User Interaction mode from the
System Driven mode.
In case of activated User security feature the User Interaction Mode is restricted to the Information and
Login menu item, until a login with correct PIN is done.
For User Interaction mode display information and rules see ThinStor
®
Plus LTO3 Autoloader –
Operator's Manual.
8.4.1 Automatic Mode
Automatic Mode is the default setting and allows the autoloader to switch between Random and
Sequential Mode depending on the SCSI command received. In this mode Sequential Mode is
activated after Power On.
Every MOVE MEDIUM, READ ELEMENT STATUS or INITIALIZE ELEMENT STATUS command
disables Sequential Mode and activates Random Mode. The unit will switch back to Sequential Mode
with every OCP initiated Load Command.
8.4.2 Random Mode
In Random Mode the Media Exchanger SCSI target is visible on the SCSI bus, i.e. the autoloader
allows the host application software to select any cartridge in any order. Cartridges can be moved by
MOVE MEDIUM commands in random order. Unload commands to the drive should not be executed.
