Fault tolerant external application server. An external application server is a web-based system that allows a user of a client computing device to work with files over a network through a general purpose client application communicating with the host. A host mediates functionality and provides a platform for interacting with external application servers. The external application server is implemented as a server farm. The fault-tolerant farm system combines delayed configuration replication between farm members, replaceable farm members, and optional health monitoring to allow an external application server farm to perform on-the-fly configuration while maintaining full functionality without requiring a real-/ RTI
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