Rising/Falling Threshold - HP StorageWorks 8B - FC Entry Switch User Manual

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Introducing Fabric Watch
Figure 1-1 shows a typical example of an error counter with a temperature range threshold.
Figure 1-1 Example of Range Threshold: Temperature (Celsius)

Rising/Falling Threshold

A rising/falling threshold tracks whether an element is on the desired side of a boundary. It includes
an upper and lower boundary, and the buffer zones are always zero. Events can be selected for
transitions between the boundaries. Rising/falling thresholds are typically used for rate based
counters. Rate based counters are all counters with a time base set to something other than "none",
this includes the TX Perf and RX Perf counters.
Fabric Watch User's Guide 1-3