Enhanced problem determination capability for teleprocessing

The VTAM era is new, but the trend is clear. The end users want more availability, not more information about why the system is unavailable, but central host control will become more complicated. With distributed intelligence, alternate CPU paths, and intelligent controllers that can “coast” when the link to the host is lost, apparent availability may increase without any corresponding improvement in hardware meantime-to-failure rates, but such super systems are going to require more sophisticated error analysis at the control program level in an integrated, cohesive manner, not added on as was FERS.