Attention: If a SAN Volume Controller is powered off for more than five minutes
and it is the only SAN Volume Controller that is connected to an 2145
uninterruptible power supply (2145 UPS), the 2145 UPS also powers off. To power
on the SAN Volume Controller, you must first power on the 2145 UPS to which it
is connected.
Note:
The 2145 uninterruptible power supply-1U (2145 UPS-1U) does not power
off when the SAN Volume Controller is shut down from the power button.
Power LED
The green power LED indicates the power status of the SAN Volume Controller.
The properties of the green power LED are as follows:
Off One or more of the following are true:
v No power is present at the power supply input
v The power supply has failed
v The LED has failed
On
The SAN Volume Controller is powered on.
Flashing
The SAN Volume Controller is turned off but is still connected to a power
source.
Note:
A power LED is also on the rear of the server.
Check LED
The amber check LED is used to indicate critical failures on the service controller.
If the check LED is off and the power LED is on, the service controller is working
correctly.
If the check LED is on, a critical service controller failure was detected.
The check LED is also on while the service controller code is being reprogrammed.
For example, when the SAN Volume Controller cluster code is being upgraded, the
check LED is on. It is normal for the power LED to be on at this time.
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.
Each button corresponds to the direction that you can move in a menu. For
example, to move right in a menu, press the navigation button that is located on
the right side. If you want to move down in a menu, press the navigation button
that is located on the bottom.
Note:
The select button is used in tandem with the navigation buttons.
Select button
You can use the select button to select an item from a menu.
104 IBM System Storage SAN Volume Controller: Hardware Installation Guide
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