Component identification 6
Controller LEDs
Immediately after you power up the server, the controller runtime LEDs illuminate briefly in a
predetermined pattern as part of the POST sequence. At all other times during server operation, the
illumination pattern of the runtime LEDs indicates the status of the controller.
Item Color Name Interpretation
1
On = Controller is in reset state.
Off = Controller is in an idle or runtime state.
Flashing 5 Hz = Controller and cache are performing a backup.
2
When an error occurs, this LED is on. During power up, this
LED is solid for up to 2 seconds.
3
When the controller is in good health, this LED flashes at 1 Hz.
During power up, this LED is solid for up to 2 seconds.
4
Off = Non-encrypting
Flashing = Undergoing retry
Cache module LEDs