IBM Storwize V5010 Manual page 690

Name and Color
position
Fault (right) Amber
Battery in use Green
Canister status
The status of each canister is displayed by three LEDs on the back of the unit, as shown in
Figure 12-10.
Figure 12-10 Node canister status LEDs (the Storwize V5020)
The meaning of each LED is described in Table 12-4.
Table 12-4 Canister status LEDs
Name and Color
position
Power (left) Green
Status Green
(middle)
668
Implementing the IBM Storwize V5000 Gen2 with IBM Spectrum Virtualize V8.1
State and Meaning
OFF If the LED is off, no known conditions are preventing normal operation,
unless the battery status LED is also on.
ON An active condition or fault could compromise normal operation.
SLOW BLINK There is a non-critical fault with the battery.
OFF The battery is not being used to power the canister.
FAST BLINK The battery is currently providing power for a "fire hose"
dump.
State and Meaning
OFF No power is available or power is coming from the battery.
SLOW BLINK Power is available but the main CPU is not running; the
system is in standby mode.
FAST BLINK System is in self test.
ON Power is available and the system code is running.
OFF Indicates one of the following conditions:
– No power to the canister
– Canister is in standby mode or self test
– Operating system is loading
BLINK The canister is in candidate or service state. It is not performing I/O.
It is safe to remove the node.
BLINK FAST The canister is carrying out a fire hose dump.
ON The canister is active, able to perform I/O, or starting. The system is part
of a cluster.