What is database replication and why replicate your server solution?

You essentially have two pieces of hardware performing the same actions when you replicate information from one server to another.

If one server fails then this is then effective because another is able to continue the tasks of the server identically.

This is important on a web server because visitors are provided with a consistent service which gives your company a good reputation.

After replication on a database server, all information is duplicated which means it is accessible even in the event of the failure of your primary server.

In a disaster recovery situation, this benefits businesses because employees are able to continue working with access to company data, meaning that in the worst situations there is enhanced productivity.

Failover resilience is combined with cost efficiency with database replication. For projects requiring high levels of uptime without the costly overheads, this is the perfect starting point.

It involves a small software module being installed on each source and target server which will control the IP failover on the servers. Data replication is dealt with from within the database software itself.

Whilst the source servers are active, the initial mirroring operation can be performed. Operations are automatic and transparent after this simple configuration and initial mirroring are completed.

The failover module resides on servers, and continually monitors the source servers each other to detect any failure in the solution and/or network.

In the event of a server failure the target server can assume the IP addresses of the failed servers.

Why can replication and clustering be more effective than traditional backup alone?

With traditional backup alone, businesses run the risk of losing up to a full day's data in the event of a system failure, and this could take hours to restore.

For many businesses, this amount of lost data and downtime is no longer acceptable, which is why industry leaders such as Microsoft and IBM use this type of replication for their high availability and disaster recovery solutions.

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