Table 77. AC PSU status indicator codes
Power indicator codes Condition
Green Indicates that a valid power source is connected to the PSU and the PSU is operational.
Blinking amber Indicates an issue with the PSU.
Not powered on Indicates that the power is not connected to the PSU.
Blinking green Indicates that the firmware of the PSU is being updated.
CAUTION: Do not disconnect the power cord or unplug the PSU when updating firmware. If
firmware update is interrupted, the PSUs do not function.
Blinking green and powers
off
When hot-plugging a PSU, it blinks green five times at a rate of 4 Hz and powers off. This indicates a PSU
mismatch due to efficiency, feature set, health status, or supported voltage.
CAUTION: If two PSUs are installed, both the PSUs must have the same type of label; for
example, Extended Power Performance (EPP) label. Mixing PSUs from previous generations
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: If two PSUs are used, they must be of the same type and have the same
maximum output power.
CAUTION: When correcting a PSU mismatch, replace the PSU with the blinking indicator.
Swapping the PSU to make a matched pair can result in an error condition and an
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.
Drive indicator codes
The LEDs on the drive carrier indicates the state of each drive. Each drive carrier has two LEDs: an activity LED (green) and a status LED
(bicolor, green/amber). The activity LED blinks whenever the drive is accessed.
Figure 112. Drive indicators
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 power
on.
NOTE: Drive status indicator behavior is managed by Storage Spaces Direct. Not all drive status indicators may be used.
Table 78. Drive indicator codes
Drive status indicator code Condition
Blinks green twice per second Indicates that the drive is being identified or preparing for removal.
130 System diagnostics and indicator codes
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