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AdministeringIn addition to administering the database server, you can tune performance, replicate data, and archive data.
Enterprise ReplicationThe describes the concepts of data replication using Informix® Enterprise Replication, including how to design your replication system, as well as administer and manage data replication throughout your enterprise.
About Enterprise ReplicationInformix® Enterprise Replication generates and manages multiple copies of data at one or more sites, which allows an enterprise to share corporate data throughout its organization.
HCL Informix® Enterprise Replication technical overviewInformix® Enterprise Replication is an asynchronous, log-based tool for replicating data between HCL Informix® database servers. Enterprise Replication on the source server captures transactions to be replicated by reading the logical log, storing the transactions, and reliably transmitting each transaction as replication data to the target servers.
High Availability

High Availability

Because Enterprise Replication implements asynchronous data replication, network and target database server outages are tolerated. In the event of a database server or network failure, the local database server continues to service local users. The local database server stores replicated transactions in persistent storage until the remote server becomes available.

If high availability is critical, you can use high-availability clusters in conjunction with Enterprise Replication. High-availability clusters support synchronous data replication between database servers: a primary server, which can participate in Enterprise Replication, and one or more secondary servers, which do not participate in Enterprise Replication. If a primary server in a high-availability cluster fails, a secondary server can take over the role of the primary server, allowing it to participate in Enterprise Replication. Client connections to the original primary server can be automatically switched to the new standard server.

For more information on using high-availability clusters with Enterprise Replication, see Using High-Availability Clusters with Enterprise Replication.

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