I'm wondering if there is any deeper reference available to supplement the standard Alerts Matrix docs for SRM?

For this case, I would like to understand specific conditions covered with the Isilon "Miscellaneous Event" definition. This is the only default definition I have turned off, but we just missed generating an alert for the following condition from one of our clusters: "NIS servers in Primary are offline. Authentication services may be interrupted."

I previously disabled the Miscellaneous Event definition, because it was generating too much noise. I also had no way of hard coding the severity levels, as we've done with the other definitions.