NonStop NS-Series Operations Guide (H06.12+)

Table 3-4 Status LEDs and Their Functions (continued)
FunctionColorLED NameLocation
If all lights are on and none
are flashing, the drive is not
operational. Perform the
following actions:
1. Check FCSA. Replace if
defective.
2. Check FC-AL I/O
module. Replace if
defective.
3. Replace drive.
All
Flashes when EMU is
operational and performing
locate. Power might just
have been applied to the
EMU, or an enclosure fault
might exist.On when an
EMU fault exists that is not
an enclosure fault.Off when
an EMU fault exists, which
could be or might not be an
enclosure fault.
Left GreenHeartbeatEMU
Flashes when EMU is
operational and performing
locate.On when EMU is
operational. An EMU or an
enclosure fault might still
exist.Off when power has
just been applied to an
enclosure, or when an
enclosure fault exists.
Middle GreenPower
Flashes when EMU is
operational and performing
locate.On when EMU is
operational, but an
enclosure fault exists.Off
when EMU is operational,
or power has just been
applied to an enclosure, or
when an EMU fault exists
that is not an enclosure
fault, or when an enclosure
fault exists.
AmberEnclosure Status
Lights when power is on
and module is available for
normal operation. If light is
off, the module is
nonoperational: check
FCSAs, cables, and power
supplies.
Middle GreenPower-onFC-AL I/O Module
Lights when carrier on Port
1 is operational.
Bottom GreenPort 1
Lights when carrier on Port
2 is operational.
Top GreenPort 2
Lights when the adapter is
receiving power.
GreenPower-onFibre Channel ServerNet
adapter (FCSA)
66 Overview of Monitoring and Recovery