Dell PowerEdge 1500SC - Manual (Page 8)

Table 2 -1 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 drive failure, 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.
Power Supply Indicators
Your system has two power supply options. A single nonredundant power supply or up to two hot-pluggable redundant power supplies. The single
nonredundant power supply does not have indicators. The hot-pluggable redundant power supply indicators are shown in
Figure 2 -5 .
Figure 2-5. Redundant Power-Supply Indicators
NOTE: If you do not have an optional RAID controller installed, you will see only the "drive online" and "drive bay empty" indicator patterns.
Table 2-1. SCSI Hard Drive Indicator Patterns
Condition Indicator Code
Identify drive All three drive status indicators blink simultaneously.
Drive being prepared for removal The three drive status indicators flash sequentially.
Drive ready for insertion or removal All three drive status indicators are off.
Drive being prepared for operation The drive online indicator is on. The drive activity light might flash briefly.
Drive bay empty All three drive status indicators are off.
Drive predicted failure The drive online indicator is on. The drive failure indicator blinks on briefly each second.
Drive failed The drive online indicator turns off. The drive failure indicator blinks off briefly each second.
Drive rebuilding The drive online indicator blinks rapidly.
Drive online The drive online indicator is on.