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Performance Considerations

This section contains questions for system programmers to answer when planning for the channel-attachment configuration and for Advanced Function Presentation(TM) licensed programs.

Consider the following issues while setting up your channel-attachment configuration.

System/370 Attachment

ESCON Attachment

The ESCON channel is the replacement for the System/370 parallel channel. It provides improvements in data rate, physical path length, cable space requirements, and overall system connectivity.

Set the missing-interrupt handler (MIH) for 13 minutes or more.

FICON Attachment

The FICON(TM) channel is the high performance replacement for the System/370 parallel channel and the ESCON channel. It provides improvements in data rate, physical path length, cable space requirements, and overall system connectivity.

Set the missing-interrupt handler (MIH) for 15 minutes or more.