Because data is replicated at local and remote databases in a Replication Server system, clients can operate in a fault-tolerant environment so that:
When a failure occurs at a remote database, clients can use local copies of replicated data.
When a WAN failure occurs, clients can use local copies of replicated data.
When the local data server fails, clients can use replicated data at another site.
Network failure or database failure at other locations do not halt work at the local database. When WAN communications fail, Replication Server stores operations on replicated tables in stable queues (disk storage). The replicated tables at the unavailable databases are updated when communications resume. If a local data server fails, clients can continue working by temporarily accessing a replicate copy of the data.
