Event Settings; Above Event Triggers; Threshold Monitoring; Buffered Data Region - HP StorageWorks 2/64 - Core Switch Administrator's Manual

does not trigger an event even though the absolute value of the counter reaches 4, which is well above the
high threshold.
Figure 5
Example without an event

Event settings

This section describes how Fabric Watch compares a fabric element's data value against a threshold value
to determine whether or not to trigger an event. It describes how a specified buffer zone impacts event
triggering.
Fabric Watch monitors data values for one of the following conditions:
• "Above event
• "Below event
• "Changed event
• "In-Between
For Fabric Watch to monitor these conditions, the alarm setting must be set to a non-zero value.

Above event triggers

Use the Above event trigger for an element that requires only high threshold monitoring. In the Above event
trigger, Fabric Watch triggers an event immediately after the data value becomes greater than the high
threshold.
Define a buffer zone within the operational limit of an area to suppress multiple events when the counter
value fluctuates above the high threshold and buffer zone.
buffer zone.When a buffer is used, the data value must be greater than the sum of the high threshold and
the buffer value (event 1 in
Fabric Watch triggers a second event (event 2) to indicate that it has returned to normal operation.
Figure 6 Above event trigger with buffer zone
triggers" on page 23
trigger" on page 24
trigger" on page 24
triggers" on page 24
Figure ). When the data value becomes less than the high threshold again,
Figure shows an Above event trigger with a
Fabric OS 5.x Fabric Watch administrator guide 23