Hitachi NAS Platform 5000 Series Hardware Reference Manual page 26

LEDs
Medium flash The server is available to host file services but is not currently doing
(once every .8 so. This also occurs if no EVS is configured, or if all EVSs are running on
seconds) the other node in a cluster.
Fast flash (five The server is rebooting.
flashes per
second)
Off The server is not powered up.
The following table describes the various server status LEDs:
LEDs
Amber Critical failure and the server is not operational.
Slow flash System shutdown has failed. Flashes once every three seconds.
(once every
three
seconds)
Medium flash The server needs attention, and a non-critical failure has been
(once every .8 detected, for example, a fan or power supply has failed. Flashes once
seconds) every .8 seconds.
Off Normal operation.
The following table describes the varius fan status LEDs:
LEDs
Red Fan has failed, fan speed is out of acceptable range, or fan speed is
not being reported. (This LED will be on if the corresponding fan has
been removed.)
Replace the fan as soon as possible.
Off Normal operation.
The following table describes the O/S disk activity and status LEDs:
Chapter 4: Hitachi NAS Platform server components
Hitachi NAS Platform Series 5000 Hardware Reference
Meaning
Table 5 Server status LED (amber)
Meaning
Table 6 Fan status LEDs
Meaning
LED status indicators
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