Owners Manual

Power indicator codes Condition
CAUTION: If two PSUs are used, they must be of the same type and have the same maximum
output power.
CAUTION: Combining AC and DC PSUs is not supported and triggers a mismatch.
Hard drive indicator codes
Each hard drive carrier has an activity LED indicator and a status LED indicator. The indicators provide information about the current status
of the hard drive. The activity LED indicator indicates whether the hard drive is currently in use or not. The status LED indicator indicates
the power condition of the hard drive.
Figure 10. Hard drive indicators
1
hard drive activity LED indicator 2 hard drive status LED indicator
3 hard drive
NOTE: If the hard drive is in the Advanced Host Controller Interface (AHCI) mode, the status LED indicator does not turn on.
Table 11. Hard drive indicator codes
Hard drive status indicator code Condition
Flashes green twice per second Identifying hard drive or preparing for removal.
O Hard drive ready for removal.
NOTE: The hard drive status indicator remains o until all hard
drives are initialized after the system is turned on. Hard drives
are not ready for removal during this time.
Flashes green, amber, and then turns o Predicted hard drive failure.
Flashes amber four times per second Hard drive failed.
Flashes green slowly Hard drive rebuilding.
16 XC640 Series and XC Core system overview