IBM Magstar 3494 manual Manual, Online

The library manager continues to accept commands from the host. The commands are either performed (immediate non-motion, non-mount commands) or queued (motion commands) if the 3494 is Online.

The System Summary window contains the operational mode status and displays Pause Pending from the time that Pause is requested until the time that the cartridge accessor is stopped. When the cartridge accessor is stopped, the System Summary window displays Pause.

Use Pause mode when you want to stop all cartridge accessor motion in an orderly manner (usually to open a front door).

To resume cartridge accessor motion, select Auto from the Mode pull-down menu.

Note: If you are in Pause mode and you want to go to the Offline state, you must go to either Auto mode or Manual mode. From either of these modes (selected from the Pause/Offline Pending pop-up window), you can complete the transition to the Offline state. This process allows the 3494 to handle all pending host commands before going to the Offline state.

Manual

Use Manual mode when the cartridge accessor is out of service. In Manual mode, the library manager console displays all mount and eject requests. The display also shows the cartridge volser, the tape library drive number, and the location of the cartridge.

When selected, the mode changes from Auto or Pause mode to Manual mode. You are prompted to con®rm the selection. The icon beforeManual indicates that Manual mode was selected. The cartridge accessor is automatically parked in the home position. The library manager then directs motion commands to the Manual mode window instead of to the cartridge accessor.

See ªUsing Manual Modeº on page 227 for a complete description of the Manual mode operating procedure.

Online

Selecting Online causes the library manager to send a message to all attached 3490E/3590 and Virtual Tape Servers to indicate that the library manager is Online. If Online is selected and the library manager is already Online, the selection is ignored and no messages are sent to the attached control units. The pop-up window indicates Online Pending while the library manager is in the process of going Online.

You are prompted to con®rm the selection. The select button in front ofOnline indicates that the Online state was selected.

When the library manager is powered on and after all the initialization code executes successfully, Auto mode and Online state starts automatically after a two-minute delay if the user does not intervene. The operator or service personnel may want to prevent the library manager from automatically going Online and in Auto mode. A pop-up window is displayed (after the IBM logo panel display times out) that allows you to press the Enter key and continue directly into Auto mode and

Chapter 6. Advanced Operating Procedures 101