Dell PowerEdge 6850 System Installation Manual page 25

SCSI Hard-Drive Indicator Codes
If RAID is activated, two indicators on each of the hard-drive carriers provide information on the status of the SCSI hard drives. RAID can be enabled either by
using ROMB on the system board or by using a RAID card connected to the system board. See
the drive power-on/fault indicator.
Figure 2-3. SCSI Hard-Drive Indicators
Table 2-3 lists the drive indicator patterns. Different patterns are displayed as drive events occur in the system. For example, if a hard drive fails, the "drive
failed" pattern appears. After the drive is selected for removal, the "drive being prepared for removal" pattern appears, followed by the "drive ready for
insertion or removal" pattern. After the replacement drive is installed, the "drive being prepared for operation" pattern appears, followed by the "drive online"
pattern.
NOTE: If a RAID controller is not present, the green power-on/fault indicator is on if power is available to the drive. The drive-activity indicator also blinks
when the drive is being accessed.
Table 2-3. Hard-Drive Indicator Patterns
Condition
Identify drive
Drive being prepared for removal
Drive ready for insertion or removal Both drive indicators are off.
Drive being prepared for operation
Drive predicted failure
Drive failed
Drive rebuilding
Drive online
Indicator Pattern
The green power-on/fault indicator blinks four times per second.
The green power-on/fault indicator blinks two times per second.
The green power-on/fault indicator is on.
The power-on/fault indicator slowly blinks green, amber, and off.
The amber power-on/fault indicator blinks four times per second.
The green power-on/fault indicator blinks slowly.
The green power-on/fault indicator is on.
Figure 2-3 and Table 2-3. The SCSI backplane firmware controls