Server Failover Clustering is best described in practical terms, A “Failover Cluster” is a group of servers, with shared storage, configured so that if a failure occurs on a server in the group; the resources, applications and roles of the server which failed are moved to a stable server in that group without any downtime.
The Benefits of a Failover Cluster
- Zero down time due to hardware failure
- SQL database clustering for extremely high database integrity
- Co-location of mission-critical applications and data
- Enterprise class fault tolerance
Tips and Tricks for Implementing a Server Failover Cluster.
- Not all applications are cluster aware, so be sure to install non-cluster aware applications on every node in the failover cluster prior to an actual failure.
- All nodes in the failover cluster should have the exact same hardware configuration.
- Do not put a cluster on line if it does not pass cluster validation with flying colors. Beware of this.
- Have a network segment strictly for replication traffic and do not register these in DNS or connect them to any other infrastructure.
- Use the largest and best SSD (Solid State Drives) or Flash high availability SAN storage that you can afford. If you choose to use a virtual SAN, this is not a bad choice but be sure to understand it as well as implement it.
If you are interested in implementing server failover clustering in your business, please give us a call at 210-497-1424, contact us or e-mail us and we will be happy to discuss the best ways to implement a failover cluster into your companies network.
