A system is disclosed for providing transparency between fail-over host
partners for data acquisition clients of a redundancy-enabled host in a
supervisory process control data acquisition application runtime
environment. The system includes a name resolution table for mapping
location-independent reference names to network location-specific
addresses. A location-independent name is assigned to the
redundancy-enabled host comprising an active host partner and a standby
host partner. A messaging infrastructure serves clients of the
redundancy-enabled host. The messaging infrastructure maintains a name to
address translation for each reference of the client to subscribed data
on the redundancy-enabled host such that a same name is used to reference
data on the redundancy-enabled host without regard to which one of the
redundancy-enabled host partners is presently active.