Using the Event Monitoring Service (November 1999)

Chapter 3 37
Defining a Monitoring Request
Specifying When to Send Event Notifications
Specifying When to Send Event Notifications
When you create a request, you specify the conditions under which you
want to collect resource status values. While the monitor may be polling
disks every five minutes, for example, you may only want to be alerted
when something happens that requires your attention. Specify these
conditions in the Notify area of the Monitoring Request Parameters
screen. Here are the terms under which you can be notified:
When value is ... You define the conditions under which you wish to be
notified for a particular resource. Choose an operator
(=, not equal, >, >=, <, <=) and one of the possible
values returned by the monitor. The content of the
value field varies depending upon the resource
monitored. The value field might display as a list
box or a blank field.
If a list box displays, use the scroll bar and select
from the list. If a numeric field displays, type in a
value.
When value changes This sends notification every time a resource value
changes. Typically this is used for resources whose
values change infrequently. Change here means any
change. For example, you could receive notification
every time the number of mirrored copies of data
changes, whether it is from 2 to 1 or from 1 to 2.
At each interval This sends notification at each polling interval. It is
commonly used for reminders or for gathering data
for system analysis. Use this for only a small number
of resources at a time, and with long polling intervals
of several minutes or hours; there is a risk of affecting
system performance.