Table 36. AC PSU status indicator codes(continued)
Power indicator codes
Condition
of PowerEdge servers is not supported, even if the PSUs have the same power rating. This
results in a PSU mismatch condition or failure to power on the system.
CAUTION:
When correcting a PSU mismatch, replace only the PSU with the blinking
indicator. Swapping the PSU to make a matched pair can result in an error condition and
unexpected system shutdown. To change from a high output configuration to a low output
configuration or vice versa, you must power off the system.
CAUTION:
AC PSUs support both 240 V and 120 V input voltages with the exception of
Titanium PSUs, which support only 240 V. When two identical PSUs receive different input
voltages, they can output different wattages, and trigger a mismatch.
CAUTION:
If two PSUs are used, they must be of the same type and have the same
maximum output power.
Drive indicator codes
The LEDs on the drive carrier indicates the state of each drive. Each drive carrier in your system has two LEDs: an activity LED (green)
and a status LED (bicolor, green/amber). The activity LED flashes whenever the drive is accessed.
Figure 92. Drive indicators on the drive and the mid drive tray backplane
1. Drive activity LED indicator
2. Drive status LED indicator
3. Drive Capacity Label
NOTE:
If the drive is in the Advanced Host Controller Interface (AHCI) mode, the status LED indicator does not turn on.
Table 37. Drive indicator codes
Drive status indicator code
Condition
Flashes green twice per second
Identifying drive or preparing for removal.
Off
Drive ready for removal.
NOTE:
The drive status indicator remains off until all drives
are initialized after the system is turned on. Drives are not
ready for removal during this time.
Flashes green, amber, and then turns off
Predicted drive failure.
120
System diagnostics and indicator codes
