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About non-optimized paths in FC configurations

Non-optimized paths are intended for use when certain storage system resources are not available.

A configuration has both optimized and non-optimized FC paths. Non-optimized paths have higher overhead and possibly lower performance. To prevent performance problems, make sure the FC paths are configured so that non-optimized paths are only used when there is a failure.

If your FC paths are not configured correctly, routine traffic can flow over a non-optimized path. The storage system measures FC traffic over optimized and non-optimized paths. If it detects significant traffic on a non-optimized path, the storage system issues a log message and triggers an AutoSupport message.