6
Select button
7
Node identification label
8
Error LED
Cache LED
System activity is indicated through the green, cache LED.
Table 2 describes the system activity indicators.
Table 2. Cache LED settings
Cache LED status Result
Off The system has not yet started processing.
On The system is functionally active, has joined a working
cluster, and is processing data.
Flashing The node is dumping cache and state data to the local disk
in anticipation of a system reboot (from a pending
power-off action or other controlled restart sequence). Do
not remove the power cable or force a power-off action
while this LED is flashing.
Front panel display
The front panel display shows service, configuration, and navigation information.
Information on the front panel display is available in several languages. The
display can show both alphanumeric information and graphical information
(progress bars).
The front panel displays configuration and service information about the SAN
Volume Controller and the SAN Volume Controller cluster, including the following
items:
v Boot progress indicator
v Boot failed
v Charging
v Hardware boot
v Node rescue request
v Power failure
v Powering off
v Recovering
v Restarting
v Shutting down
v Error codes
Navigation buttons
You can use the navigation buttons to move through menus.
There are four navigational buttons that you can use to move throughout a menu:
up, down, right and left.
68 IBM System Storage SAN Volume Controller: Hardware Installation Guide
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