The section describes how to plan for evolution of the multiplex and failover of multiplex components in case you lose one of the machines in the multiplex environment. It discusses
Resources crucial to continued operation of the database, and how to protect them
Procedures for migrating a multiplex server
Procedures for failing over a multiplex server to a different machine
In a multiplex environment, disk resources for the write server are the most important. Failures that affect only resources local to a query server are easy to address since the query server can be easily dropped and then recreated with working resources.
