4-6
Environmental Monitoring
Table 4-1 Device carrier LED definitions
Device fault
LED
(Red-Bottom)
Device activity
LED
(Green-Top)
Meaning
Off
On
Disk operates normally
Off
Flashing
Disk operates normally
Off
Off
Disk is inactive and there is no fault
On
On
Fault status. Disk may not be responding to
control signals and may be bad, or may need a
power-off reset.
If the problem persists, replace the disk.
On
Off
Fault status. Disk is inactive and spun down.
Replace the disk.
Flashing
On or Flashing
Array build or rebuild is in progress with drive
activity.
Flashing
Off
Array build or rebuild is pending and there is
no drive activity.
