Shared coupling facility channel path recommendations

The following are recommended:

1. For shared coupling facility channel paths, make sure that only LPs that need to use the channel path have it configured online. Doing so eliminates unnecessary traffic on the channel path from those systems that have it online but do not have the attached coupling facility in the active CFRM policy.
2. These channel paths can result in ’Path Busy’ conditions when another LP is using the path. This situation can result in delays in getting requests to the coupling facility on this path. The number of ’Path Busy’ conditions can be found in the RMF CF Subchannel Activity report in the BUSY COUNTS column labeled PTH. As a guideline, if this count exceeds 10% of the total requests, you should consider not sharing the channel path or adding additional coupling facility channel paths.