IBM SAN Volume Controller 2145-SV1 Hardware Installation Manual page 37

On
The node is turned on.
Blinking
The node is turned off, but is still connected to a power source.
Power button
The power button turns main power on or off for the SAN Volume Controller .
• To turn on the power, press and release the power button.
• To turn off the power, press and release the power button. For more information about what to check
before you turn off the SAN Volume Controller node, see "MAP 5350: Powering off a node."
Attention: When the node is operational and you press and immediately release the power button,
the SAN Volume Controller writes its control data to its internal disk and then turns off. This
process can take up to 5 minutes.
Identify LED
This LED blinks if the Identify button on the back of node is pressed. The Identify LED blinks on both the
front and rear panels. Use this feature to find a specific node in the data center. After the SAN Volume
Controller system is initialized and initial setup is completed, you can use the Management GUI to identify
a node by making the Identify LED on the node blink.
Node status LED
The green Node status LED has the following states:
Off
The SAN Volume Controller software is not running or cannot communicate with this LED.
On
This node is active in a SAN Volume Controller system.
Slow blink
This node is not active. It has Candidate or Service status.
Fast blink
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.
Node fault LED
The yellow Node fault LED has the following states:
Off
No warning or critical error is shown in the baseboard management controller (BMC) event log, and no
fatal node error is reported by the SAN Volume Controller software.
On
The SAN Volume Controller software indicates a fatal node error.
Blinking
A warning or critical error is shown in the BMC event log.
Battery status LED
The green battery status LED has the following states:
Chapter 1. Preparing to install the system 5