Hitachi NAS Platform 4000 Series Hardware Reference Manual page 36

LEDs
Green Normal operation with a single server or an active cluster node in
operation.
Slow flash The system has been shut down.
(once every
three
seconds)
Medium flash The server is available to host file services but is not currently doing
(once every .8 so. Also if no EVS is configured or all EVSs are running on the other
seconds) node in a cluster.
Fast flash (five The server is rebooting.
flashes per
second)
Off The server is not powered up.
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.
Chapter 4: Hitachi NAS Platform server components
Hitachi NAS Platform and Hitachi Unified Storage Series 4000 Hardware Reference
Table 3 Power status LED (green)
Meaning
Table 4 Server status LED (amber)
Meaning
LED status indicators
36