Dell PowerEdge 4300 Installation And Troubleshooting Manual page 48

3-18 Dell PowerEdge 4300 Systems Installation and Troubleshooting Guide
Three indicator lights in each SCSI hard-disk drive carrier provide information on the
status of the SCSI hard-disk drives (see Figure 3-2). The SCSI backplane firmware con-
trols the drive online and drive failure indicators.
hard-disk drive
online indicator
hard-disk drive
activity indicator
hard-disk drive
failure indicator
Table 3-4 lists the drive indicator patterns established by the SCSI backplane firmware.
Different patterns are displayed as drive events occur in the system. For example, in
the event of a hard-disk drive failure, the "drive failed" pattern appears. After the drive
is selected for removal, the "drive being prepared for removal" pattern appears, fol-
lowed 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 you do not have a Dell PowerEdge Expandable RAID Controller host adapter
card installed, you will see only the "drive online" and "drive bay empty" indicator
patterns.