NonStop S-Series Operations Guide (G06.24+)

Overview of Monitoring and Recovery
HP NonStop S-Series Operations Guide—522459-007
3-30
Using the Status LEDs to Monitor the System
Using the Status LEDs to Monitor the System
Status LEDs on the various enclosures and system components light during certain
operations, such as when the system performs a series of power-on self-tests (POSTs)
when a server is first powered on. Table 3-5 lists some of the status light-emitting
diodes (LEDs) and their functions.
Table 3-5. Status LEDs and Their Functions (page1of2)
Location LED Name Color Function
Disk drive Power-on Green Lights when the disk drive is receiving
power.
Activity Yellow or
amber
Lights when the disk drive is executing a
read or write command.
I/O multifunction
(IOMF) CRU
Power-on Green Lights when the IOMF CRU is receiving
power.
Service Amber Lights temporarily during the POSTs and
continuously when the IOMF CRU is not
in a fully functional state.
Lights continuously if the POST for the
IOMF CRU has failed or when the
service processor (SP) detects an error
in the transfer of ServerNet data.
Processor
multifunction
(PMF) CRU
Power-on Green Lights when the PMF CRU is receiving
power.
Service Amber Lights temporarily during the POSTs and
continuously when the PMF CRU is not
in a fully functional state.
Lights continuously if the POST for the
PMF CRU has failed.
Flashes when the service processor (SP)
image is being loaded from its peer.
ServerNet/DA
adapter
Power-on Green Lights when the ServerNet adapter is
receiving power.
Service Amber Lights temporarily during the POSTs and
continuously when the ServerNet
adapter is not in a fully functional state or
if the POST for the ServerNet adapter
has failed.
Fibre Channel
ServerNet
adapter (FCSA)
Power-on Green Lights when the adapter is receiving
power.
Service Amber Lights to indicate internal failure or
service action required.