IBM TotalStorage 3494 Tape Library, Operator'S Manual

Page: 131 / 605

3. The Library Manager checks the power status of the cartridge accessor. If
power is not on, a window indicates the fault and prompts you to close all
safety interlocks.
4.
If the 3494 HA1 Option is installed, the Library Manager determines the
accessor that will be the active accessor, based on the previous state. If both are
available, the preferred accessor is the local accessor. If both are not available, a
window is displayed. You can cancel the request to change to Auto mode.
5. The Pause Mode window closes.
6. The Auto LED on the operator panel flashes until the transition is complete,
then stays lit. The Auto Pending window (Figure 50) indicates that the 3494
Tape Library is changing from Pause mode to Auto mode. Emergency Motion
Off recovery is in progress will appear in the window for a short time during
this transition. When Emergency Motion Off Recovery is complete, the window
closes.
7. The 3494 Tape Library enters Auto mode.
8.
The Library Manager sends an attention message to all attached hosts,
indicating that the state of the 3494 Tape Library has changed.
Auto Mode to Pause Mode (No Error)
You can use either the operator panel (see “Changing to Pause Mode” on page 114)
or the Library Manager to request a change to Pause mode. Either way you
generate the request, the Library Manager checks the status of the 3494 Tape
Library.
When you use the Library Manager to request a change from Auto mode to Pause
mode, the following actions occur:
1.
The Pause Pending window indicates that the change to Pause mode is in
progress and that the cartridge accessor is being parked. The Pause LED on the
operator panel flashes until the transition is complete, then stays lit. The border
of the Pause Pending window alternates between its highlighted and
non-highlighted color. This provides a visual indication that the 3494 Tape
Library is still in Pause Pending mode. The Library Manager also beeps five
times.
2. The Library Manager updates the System Summary window 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 cartridge accessor notifies the Library Manager that it is in its park
location.
5. The Library Manager removes power from the cartridge accessor.
a06c0010
Figure 50. Auto Pending Window
Chapter 4. Operational Modes, Operational States and Informational States
105