HP StorageWorks 2/16V Brocade Fabric Watch Administrator's Guide (53-1000243-0 - Page 33

Event Settings

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Configuring Events 1 Example 2: Not Triggering an Event Figure 1-5 uses the same data to illustrate a case in which a threshold is exceeded without triggering an event. In this case, the calculated rate of change in the data value is always less than or equal to the high threshold of 2. At the tenth sample, the rate of change is one per minute. At the fourteenth, twenty-first, and twenty-fifth sample, the rate of change remains equal to the high threshold of 2. In this case, Fabric Watch does not trigger an event even though the absolute value of the counter reaches 4, which is well above the high threshold. Figure 1-5 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 Triggers," next • "Below Event Trigger" on page 1-18 • "Changed Event Trigger" on page 1-18 • "In-Between Event Triggers" on page 1-19 For Fabric Watch to monitor these conditions, the alarm setting must be set to a nonzero value. Fabric Watch Administrator's Guide Publication Number: 53-1000243-01 1-17

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Fabric Watch Administrator’s Guide
1-17
Publication Number: 53-1000243-01
Configuring Events
1
Example 2: Not Triggering an Event
Figure 1-5
uses the same data to illustrate a case in which a threshold is exceeded without triggering an
event. In this case, the calculated rate of change in the data value is always less than or equal to the high
threshold of 2.
At the tenth sample, the rate of change is one per minute. At the fourteenth, twenty-first, and twenty-fifth
sample, the rate of change remains equal to the high threshold of 2. In this case, Fabric Watch does not
trigger an event even though the absolute value of the counter reaches 4, which is well above the high
threshold.
Figure 1-5
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 Triggers,”
next
•
“Below Event Trigger”
on page 1-18
•
“Changed Event Trigger”
on page 1-18
•
“In-Between Event Triggers”
on page 1-19
For Fabric Watch to monitor these conditions, the alarm setting must be set to a nonzero value.