IBM Magstar 3494 manual Initialization Complete State to Online or Offline State, Degraded

go to the Offline state. This time is needed to move the cartridges to the

high-capacity output facility from the storage cells. If a high-capacity

operation is in progress, the operator is prompted to cancel the operation. If

the operator does not cancel the high-capacity operation, the Offline request

is cancelled.

Note: Online to Offline State Ð not allowed if an Export or an Import operation is in

progress. A pop-up message will be displayed alerting the operator 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 ªCancel VTS Export/Importº from the

Commands/System Management pulldown.

Figure 48 on page 104 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. The determination is made by examining the database. The steps taken during the transition are the same as for an operator request as described in ªOffline State to Online Stateº on page 72 or ªOnline State to Offline Stateº on page 72.

Offline State to Shutdown Pending State

A request to enter the shutdown pending state is made through an operator request. No actions are taken during the change.

Informational State Transitions

One or more information states may be active at any time in the tape library. When an informational state is entered or left, and the tape library is in the Online state, a noti®cation indicating the change is sent to all attached hosts. Most of the states are a condition in the 3494, and no actions are performed during the change into or out of the state.

The following describes any additional steps performed during the change into or out of a state:

Degraded

When a component of the tape library becomes available, the library manager determines whether any other components are unavailable. If all components are now available, the 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 tape library to determine whether the interlock opening was expected or unexpected. If the opening was unexpected, the tape library is forced into Pause mode.

Intervention required

When a condition requiring intervention is corrected, the library manager determines whether any other intervention requirements exist. If none exist, the tape library leaves the intervention-required state.

Chapter 4. Operational Modes and States, and Informational States 73