Dell PowerVault 770N (Deskside NAS Appliance) - Manual (Page 6)

Power-on Green indicates that the power supply is operational.
Fault Red indicates a problem with the power supply (such as a fan failure or voltage error).
Power
present
Green indicates that power is present at the power supply and that the system is connected to a power
source.
Hard-Drive Indicators
Each hard-drive carrier has two indicators: a drive-busy indicator and a drive-status indicator (see Figure 1-5 ). The indicators
provide information on the status of the respective hard drive. Table 1-5 lists the hard-drive status indicator codes.
Figure 1-5. Hard-Drive Status Indicators
Different codes display as drive events occur in the system. For example, in the event of a hard-drive failure, the "drive fail"
code appears. After the drive is selected for removal, the "prepared for removal" code appears. After the replacement drive is
installed, the "prepared for operation, drive online" code appears.
Table 1-5. Hard-Drive Status Indicator Codes
Indicator Indicator Code
Drive bay empty, ready for insertion or
removal
Off
Drive being prepared for operation, drive
online
Steady green
Identify drive Blinks green four times per second
Drive being prepared for removal Blinks green twice per second at equal intervals
Drive rebuilding Blinks green twice per second at unequal intervals
Drive failed Blinks amber four times per second
Predicted failure for the drive Blinks green, then amber, and then off, repeating this sequence every two
seconds
Drive online Steady green
NOTE: The "drive busy" indicator signifies whether the hard drive is active on the SCSI bus. This indicator is controlled by
the hard drive.