Dell PowerVault MD3860i Owner's Manual page 14

Item Indicator
1 Service action allowed
indicator
2 Service action required
indicator
14
Icon Description
CAUTION: Remove the physical disk from
the system only if the service action allowed
indicator lights blue. Removing the physical
disk from the system when the service action
allowed indicator is off may damage the
system.
Blue
Off
The service action required indicator lights amber
when there is a fault in the physical disk.
Indicates that you can safely
remove the physical disk
from the system.
Indicates that you cannot
remove the physical disk
from the system.