Rear panel LED state descriptions

NAS Platform and Unified Storage Series 4000 Hardware Reference

Part Number

The NVRAM, power, and server status LEDs indicate whether the server is powered, its operational state, and whether the NVRAM is currently being protected by battery backup power. The way an LED flashes provides further information about what is currently occurring.

Table. NVRAM status LED (green/amber)
State Meaning
Green (solid) Normal operation
Green (flashing) NVRAM contents are protected by battery power
Amber (solid) Battery pack is faulty or not fitted
Off Disabled or NVRAM battery power exhausted
Table. Power status LED (green)
LEDs Meaning
Green Normal operation with a single server or an active cluster node in operation.
Slow flash (once every three seconds) The system has been shut down.
Medium flash (once every .8 seconds) The server is available to host file services but is not currently doing so. Also if no EVS is configured or all EVSs are running on the other node in a cluster.
Fast flash (five flashes per second) The server is rebooting.
Off The server is not powered up.
Table. Server status LED (amber)
LEDs Meaning
Amber Critical failure and the server is not operational.
Slow flash (once every three seconds) System shutdown has failed. Flashes once every three seconds.
Medium flash (once every .8 seconds) The server needs attention, and a non-critical failure has been detected, for example, a fan or power supply has failed. Flashes once every .8 seconds.
Off Normal operation.