Dell PowerVault 775N (Rackmount NAS Appliance) - Manual (Page 18)

Table 3-5. Power-Supply Indicator Codes
Indicator Indicator Code
Power-on Green indicates that the power supply is operational.
Fault Red indicates a problem with the power supply (fan failure, voltage error, and so forth).
Power
present
Green indicates that power is present at the power supply and that the system is connected to a power
source.
Hard-Drive Indicator Codes
Each hard-drive carrier has two indicators: a busy indicator and a status indicator (see Figure 3-5 ). The indicators provide
information on the status of the respective hard drive.
Figure 3-5. Hard-Drive Indicators