Chapter 4. Operational Modes And States, And Informational States; Operational Modes; Auto Mode; Pause Mode - IBM Tape Library Magstar 3494 Operator's Manual

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 defined as follows:
v Operational mode
v Operational state
v Informational 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:

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
© Copyright IBM Corp. 1993, 1999
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.
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