Chapter 1 Tray Overviews 11
LEDs on the Rear of the Trays
Controller LEDs on the Sun StorageTek 2540
Array
FIGURE 1-10 Locations of the Controller LEDs on the Sun StorageTek 2540 Array
TABLE 1-2 Descriptions of the Controller LEDs on the Sun StorageTek 2540 Array (1 of
2)
Location LED Color On Off
1 Link Fault Amber At least one link has an error. Normal condition
2 Drive Link Green At least one link is active. At least one link has an error
3 Battery Fault Amber Indicates a fault within the
battery backup unit.
Normal condition
4 Cache Active Green Caching is enabled.
When blinking, the cache has
data.
Indicates a problem if caching is
enabled.
5 Service Action
Allowed
Blue The controller can be removed
from the controller tray.
The controller cannot be
removed from the controller
tray.
6 Service Action
Required (Fault)
Amber Indicates a fault within the
controller.
Normal condition
7 Power Green Power is present. No power is applied to the
controller tray.
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