IBM Magstar 3494 Operational Modes, Auto Mode, Pause Mode, Manual Mode, Select System summary

Chapter 4. Operational Modes and States, and Informational States

The operational modes and states, and informational states of the 3494 are described in this chapter.

The current status of the library manager is de®ned as follows:

vOperational mode

vOperational state

vInformational state

The operational mode and state information are available through the library manager console, or the remote library manager console if the optional Remote Library Manager Console feature is installed. To view this information, do the following:

Select Status from the Operator pull-down menu

Select System summary

Note: If the display appears blank, press any key on the keyboard to activate the display.

Operational Modes

The library operates in one of the following modes:

Auto Mode

In this mode, the cartridge accessor is operational. All commands are managed by the library manager under host program control or from the library manager console. The front doors of the library must be closed to operate in Auto mode.

Pause Mode

In this mode, the processing of Mount, Demount, Eject, and Audit requests is suspended. The 3494 enters this mode automatically when a failure prevents automatic operation or when instructed from the library manager console or the operator panel. This mode allows the operator to open the front doors on the library to correct an intervention condition or to insert cartridges into the library or remove cartridges from the high-capacity output facility. All Host requests for Mount, Demount, Eject, and Audit operations are queued until the 3494 is returned to Auto mode.

When the operator changes the mode from Auto to Pause, the library manager instructs the cartridge accessor to park. If an error condition occurs, power is immediately removed from the cartridge accessor and any operations in progress are suspended.

Manual Mode

In this mode, the cartridge accessor is parked in the home position, if possible, or moved by the operator to gain access to the desired cartridge or drive. The library manager provides instructions to the operator to perform tasks that are normally

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