Each
node canister has five Light-Emitting Diode (LED) indicators that display the state of the
individual canister and the node.
Figure 1 shows the indicators a control enclosure. Each node canister has its own set of indicators that
identify the status of the node canister. Figure 1. Node canister status
LEDs
Node canister status LED indicators
Figure 2 shows the location of the LED
indicators:Figure 2. Node canister LEDs
1 Node canister power LED
2 Node canister status LED
3 Node canister fault LED
Table 1 summarizes the meaning and values of
each indicator.
Table 1. Node canister status LEDs indicator
LED Name
Color
State
Meaning
Power
Green
Off
There is no external power to the node canister.
Slow flash
The node canister is in a
stand by state.
Fast flash
During POST, the Power LED on the node canister will fast blink to indicate the BIOS is in POST.
On
The node canister is in a
power on state.
Note: During ride through and FHD, the LED remains in Solid.
Status
Green
Off
The controller RAID stack is not operational.
Slow flash
The node canister is in
candidate or service state. For example, if it is not able to perform I/O in a cluster, it is safe
to remove the node.
Fast flash
Node canister is performing destage activity or
running on battery.
On
The controller is active and joined a cluster. The node
canister has state data that must be preserved on shutdown. This
normally means it is active in the cluster, handling I/O, but there is a transient starting state
that is also covered (it is possible to get held in starting state if a quorum cannot be
established, the alert then lights).
Fault
Amber
Off
There are no isolated FRU failures on the node
canister.
Flash
The node canister is
being identified using an identify command.
On
There are one or more isolated FRU failures in the node
canister requiring service or replacement.
Battery status LED indicators
Each node canister also has a battery and three LED indicators for the battery status. If an AC
power failure occurs, the battery provides power to the node canister as it stores cache and system
data to an internal drive. This process is known as a fire hose dump. The following
image shows the location of the battery indicators and Table 2 describes the function and
possible values for each indicator.
Figure 3. Battery LEDs
1 Battery power LED
2 Battery status LED
3 Battery fault LED
Table 2. Battery status LED indicators
LED Name
Color
State
Meaning
Power
Green
Off
The battery power protection is not being provided. This LED is per
battery. If both batteries are failing to indicate battery power, the node does not have AC Loss
protection. Replace the batteries or canister.
On
The Battery Module has DC input power or is providing power to the
system.
Status
Green
Off
Output is off or out of tolerance, unable to supply power to volatile cache
memory, and potentially de-staging function.
Flash
Battery is charging.
On
The battery is fully charged. No action necessary.
Fault
Amber
Off
There have been NO isolated faults or conditions detected by the battery
module that can be serviced using service indicators.
Flash
The APD has been identified and the battery is charging.
Note: It is
possible the battery might also have a fault.
On
There has been a fault condition detected with the battery that can be
serviced using service indicators. The battery is in a condition that permits repair or replacement
activity if removable.
Adapter slot fault LED indicators
Fault LEDs on the adapter is used to identify the adapters with any faults which might require
any replacement or servicing. Table 3 describes the function and possible values for each indicator.
Table 3. Adapter slot fault LED indicator
Fault
Off
There are no isolated FRU failures on this adapter.
Flash
The adapter is being identified using an identify command .
On
There is an isolated FRU failures in the adapter that requires service or
replacement.
Boot drive fault LED indicators
Boot drive LEDs are used to identify any failed or missing boot drive. Table 4 describes the function
and possible values for each indicator.
Table 4. Boot drive fault LED indicator
Fault
Off
There are no isolated FRU failures on this boot drive.
Flash
This boot drive is being identified using an identify command.
On
There is an isolated FRU failure in this boot drive that requires service or
replacement.
Node port indicators
Each Node canister
Ethernet port has a pair of green LEDs with the following meanings.
Table 5 describes the LED indicators.
Table 5. Onboard Ethernet port LEDs
Name
Symbol
Color
State
Meaning
Link speed
None
Green
OFF
No link connection or the link is connected at less than 1 Gbps.
ON
There is a
1 Gbps link connection to a remote device.
