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Table 47. AC and DC PSU status indicator codes (continued)
Power indicator codes
Drive indicator codes
The LEDs on the drive carrier indicate 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 138. 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 48. Drive indicator codes
Drive status indicator code
Blinks green twice per second
Off
Condition
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:
When two identical PSUs receive different
input voltages, they can output different wattage,
and trigger a mismatch.
For example a 1100W PSU connected to a High-Line AC
(HLAC) 200Vac-240Vac input, it will output 1100W. But if a
second 1100W PSU in the same system is connected to a Low
Line 100-120Vac input, it will only output 1050W, triggering a
mismatch.
Condition
Indicates that the drive is being identified or preparing for removal.
Indicates that the drive is ready for removal.
System diagnostics and indicator codes
139
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