On my AIX box running the Hobbit client I found that disk alarms aren't
generated if the condition goes from yellow to red.
I have rules to send an Email if it's yellow, and I always get that. I
also have rules to send a page if the state is red, and I get those if it
jumps from green to red. But, if the state goes to yellow and then to
red, the paging rule never fires. There isn't a entry added to the
notification log either.
I've mentioned this before on the list, but never got a definite response.