HP Integrity NonStop J-Series - Manual (Page 65)

In the tree pane, a yellow icon displayed over
a system, group, module, or any parent object
that contains subcomponents indicates that one
or more subcomponents require service or
operational intervention.
State icons are also shown in the Physical view
of a cluster or system.
Alarm Indicators
If the object has at least one alarm, an alarm icon appears:
In the tree pane
On the alarms tab and detail
In the Alarm Summary
Interpreting Icons and Color 65