Chapter 1Data Replication
Why Replicate Data?
Businesses replicate data to provide better fault tolerance and enable disaster recovery as a part of business continuity planning. Replicating the data allows for either the decentralization or the consolidation of data. This gives businesses the ability to continue in the face of planned or unplanned outages and allows for data recovery in case of disasters. Disaster recovery in the context of the Sybase Replication Server is described in Chapter 15.
A disaster can strike an information systems database management system in many ways. The lowest level of a disaster is the loss of one or more specific database records. Higher levels of data loss progressively include loss of an entire database, loss ...