HP StorageWorks MSA 2/8 HP StorageWorks Fabric Watch V3.1.x/4.1.x User Guide ( - Page 48

Using Fabric Watch boundary, you can configure buffers, or values below the high boundary and above the low boundary. When a counter changes from a value that exceeds a boundary to a value that falls between the boundary and a buffer, no event registers. An event only registers if the counter returns to a normal value beyond the buffer. Figure 1 illustrates a range threshold with buffers. The values at one second, three seconds, and five seconds generate events because they exceed boundaries. The value at 2 seconds does not generate an event because, though it crosses a boundary, it remains in the buffer zone. The values at four seconds and six seconds generate events because they cross the upper boundary and lower boundary, respectively, and return to normal values beyond the buffer zone. Figure 1: Range Threshold To configure a range threshold, you must: ■ Configure a high boundary. ■ Configure low boundary. ■ Configure a buffer (optional). ■ Configure an exceeded alarm. ■ Configure an in-between alarm. Refer to the Using chapters in this book for detailed steps. 48 Fabric Watch Version 3.1.x/4.1.x User Guide