IBM Magstar 3494 Pause Mode to Manual Mode, Manual Mode to Pause Mode, Auto Mode to Manual Mode

between its highlighted and non-highlighted color to provide a visual indication that the 3494 is still in Pause Pending mode. The library manager also beeps ®ve times.

2.The System Summary window is updated to indicate that the operational mode is Pause Pending.

3.The library manager instructs the cartridge accessor to move to its park location after completing the operations in progress.

4.The library manager is noti®ed that the cartridge accessor is in its park location.

5.The library manager removes power from the cartridge accessor.

6.The library manager enters Pause mode and sends an attention message to all attached hosts indicating that the state of the library changed.

7.The Pause Pending window is removed, and the System Summary window indicates that the operational mode is Pause and that power is off.

8.The Pause Mode window is displayed that instructs the operator to wait while the cartridge accessor is being parked. If the cartridge accessor cannot be parked or if the status of its power is unknown, the window includes this information.

Pause Mode to Manual Mode

A request to enter Manual mode is initiated by an operator using the library manager (see ªUsing Manual Modeº on page 227). No speci®c operations are performed by the library manager during the change from Pause to Manual mode. As Manual mode is entered, an attention message is sent to all attached hosts the indicates the state of the library changed to Manual mode.

The operational status is changed to Manual. If the cartridge accessor cannot be parked or if the status of its power is unknown, the pop-up window includes this information.

Manual Mode to Pause Mode

A request to enter Pause mode must be performed by an operator using the library manager. During the change to Pause mode, the following steps are performed:

1.Operations that were fetched from the operations queue, but not con®rmed as executed by the operator, are returned to the operations queue for execution when the library returns to Auto mode.

2.The library manager enters Pause mode and sends an attention message to all attached hosts indicating that the state of the library changed.

Auto Mode to Manual Mode

When an operator selects Manual mode while the 3494 is in Auto mode, the library performs the operations required to move to Pause mode and then move to Manual mode. All pop-up windows indicate that the 3494 is in Manual Pending even as it is moving through Pause mode. Also, an attention message is only sent when Manual mode is entered, not for the intermediate pause mode. During the change from Auto to Manual mode, the following steps are performed:

1.A Manual Pending pop-up window is displayed indicating that the change to Manual mode is in progress and that the cartridge accessor is being parked.

2.The System Summary window indicating that the operational mode is Manual Pending.

70Magstar 3494 Tape Library Operator Guide