IBM TotalStorage 3494 Tape Library, Operator'S Manual

Page: 135 / 605

cancel the operation. If you do not cancel the High-Capacity operation,
the Library Manager cancels the Offline request.
2.
If an Export or Import operation is in progress, you cannot request a
change from the Online state to the Offline state. The 3494 Tape Library
will display a pop-up message alerting you to do one of the following:
v Wait for the operation to complete.
v
Cancel the operation from the host.
v Cancel the operation by selecting Cancel VTS Export/Import from the
Commands/System Management pull-down menu.
Figure 67 on page 146 shows the pop-up message with these three
options.
Initialization Complete State to Online or Offline State
During the Initialization Complete state, the Library Manager determines which
operational state to enter. It makes the determination by examining the database.
The steps taken during the transition are the same as for an operator request as
described in “Offline State to Online State” on page 108 or “Online State to Offline
State” on page 108.
Offline State to Shutdown Pending State
A request to enter the Shutdown Pending state is made through an operator
request. The 3494 Tape Library takes no actions during this change.
Informational State Transitions
One or more informational states may be active at any time in the 3494 Tape
Library. When the 3494 Tape Library enters or leaves an informational state while
in the Online state, the Library Manager notifies all attached hosts. Most of the
states are a condition in the 3494 Tape Library, and it performs no actions during
the change into or out of the state.
The following describe any additional actions that occur during the change into or
out of a state:
Degraded
When a component of the 3494 Tape Library becomes available, the Library
Manager determines whether any other components are unavailable. If all
components are now available, the 3494 Tape Library leaves the degraded
state.
Safety interlock open
When a safety interlock (front door) is open, the Library Manager
examines the condition of the 3494 Tape Library to determine whether the
interlock opening was expected or unexpected. If the opening was
unexpected, the 3494 Tape Library is forced into Pause mode.
Intervention required
When you correct a condition requiring intervention, the Library Manager
determines whether any other intervention requirements exist. If none
exist, the 3494 Tape Library leaves the Intervention Required state.
Library Manager check-1 condition
The Library Manager detects an unrecoverable condition that does not
allow it to continue processing host requests. It attempts to re-initialize to
correct the problem.
Chapter 4. Operational Modes, Operational States and Informational States
109