IBM TotalStorage SAN Volume Controller, Installation Manual

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The software is restarting for one of the following reasons:
v An internal error was detected
v
A power-off operation was ended when the power button was pressed again
while the node was powering off
If a power-off operation was ended, the progress bar continues to move backward
until the node finishes saving its data. After the data is saved, the progress bar
moves forward during the restart operation.
Shutting down
The front panel indicator tracks shutdown operations.
Figure 38 is an example of what the front panel indicator shows when you issue a
shutdown command to a SAN Volume Controller cluster or a SAN Volume
Controller node. The progress bar continues to move left until it is safe to be
powered off. When the shutdown operation is complete, all power will be removed
from the node. When power has been removed from the last node that is connected
to the uninterruptible power supply (UPS), the UPS also will be shut down.
Error codes
Error codes are displayed on the front panel display.
For descriptions of the error codes that can be displayed on the front panel display,
see the appropriate section of the IBM TotalStorage SAN Volume Controller:
Service Guide . The Service Guide contains a full description of the failure and the
actions that you must perform to correct the failure.
SAN Volume Controller menu options
Menu options are available on the front panel display on the SAN Volume
Controller.
Menu options enable you to review the operational status of the cluster, node, and
external interfaces. They also provide access to the tools that you need to install
and service the node.
Figure 39 on page 63 shows the sequence of the menu options. Only one option at
a time is displayed on the front panel display. For some options, additional data is
displayed on line 2. The first option displayed is the cluster option.
R e s t a r t i n g
S h u t t i n g D o w n
Figure 38. Shutting down display
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IBM TotalStorage SAN Volume Controller: Installation Guide