Dell PowerEdge R750xa EMC Installation and Service Manual - Page 184

Drive indicator codes

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Table 58. DC PSU status indicator codes (continued) Power indicator codes 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 conversely, you must power off the system. CAUTION: Combining AC and DC PSUs is not supported. 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 186. 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 power on. NOTE: Drive status indicator behavior is managed by Storage Spaces Direct. Not all drive status indicators may be used. Table 59. Drive indicator codes Drive status indicator code Blinks green twice per second Off Condition Indicates that the drive is being identified or preparing for removal. Indicates that the drive is ready for removal. 184 System diagnostics and indicator codes

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Table 58. DC PSU status indicator codes (continued)
Power indicator codes
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 conversely, you must power
off the system.
CAUTION:
Combining AC and DC PSUs is not
supported.
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 186. 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 power on.
NOTE:
Drive status indicator behavior is managed by Storage Spaces Direct. Not all drive status indicators may be used.
Table 59. Drive indicator codes
Drive status indicator code
Condition
Blinks green twice per second
Indicates that the drive is being identified or preparing for removal.
Off
Indicates that the drive is ready for removal.
184
System diagnostics and indicator codes