HiCommand Dynamic Link Manager User's Guide (for Windows(R))

2.8 Monitoring intermittent errors (functionality when automatic failback is used)

An intermittent error means an error that occurs irregularly because of some reason such as a loose cable connection. I/O performance might decrease when an intermittent error occurs while automatic failback is used, because automatic failback is performed repeatedly. To prevent this phenomenon, HDLM can automatically remove the path where an intermittent error is occurring from those paths subject to automatic failback. This process is called intermittent error monitoring.

We recommend that intermittent error monitoring be used along with automatic failback.

With intermittent error monitoring, a path in which an error occurs a specified number of times within a specified interval is determined to have an intermittent error. The path where an intermittent error occurs has an error status until the user places the path online. Failback is not performed for the path. This status is called not subject to auto failback.

Organization of this section

2.8.1 Checking intermittent errors

2.8.2 Setting up intermittent error monitoring

2.8.3 Actions for intermittent error monitoring

2.8.4 When user operations change the intermittent error information

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