LED status indicators
The LEDs (light emitting diodes) on the front of the chassis indicate the overall status of the server, as well as the status of some of the individual components. The NVRAM backup battery pack, each of the O/S disk drives, and each of the fan assemblies has a status LED.
| LEDs | Meaning |
| 1 | O/S disk drive A status LED |
| 2 | O/S disk drive B status LED |
| 3 | NVRAM battery backup pack status LED |
| 4 | Fan 1 status LED |
| 5 | Fan 2 status LED |
| 6 | Power status LED |
| 7 | Server status LED |
| 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. |
| 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. |
| LEDs | Meaning |
| Red |
If this LED is on immediately after installing a new battery pack, it indicates that an initial battery charging and conditioning cycle is in progress. The initial battery conditioning takes approximately 24 hours, and the LED will turn off after the cycle is complete. If this LED is on during normal operation (not after installing a new battery pack), either the battery has exceeded its two year life or a problem has been detected. Check the battery status before determining any service operation. |
| Off |
Normal operation. |
| LEDs | Meaning |
| 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. |
| LEDs | Meaning |
| Blue |
If this LED is on and blue, the disk is operating normally and no problems have been detected. If the LED is flashing blue, it indicates disk activity. If the LED is on, but not flashing, there is currently no disk activity. |
| Red |
If this LED is on immediately after installing a new O/S disk, it indicates that the RAID configuration for the server is being rebuilt. The LED will turn off after the RAID configuration is restored. The amount of time it takes for the RAID configuration to be rebuilt after a new disk drive is installed depends on the amount of user and system configuration data stored. If this LED is on during the course of normal operation (not after installing a new O/S disk), either the disk has failed or the server’s RAID configuration has been degraded. |