Failover Clustering provides high availability to core Windows services. Microsoft failover clusters ensure that if one server stops functioning there are redundant server resources to ensure that your applications continue to function.
For example, if a cluster enabled database goes down, the database will be restarted on another cluster node so that continuous access is available.
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We can help with the necessary design decisions needed to maximize application availability.
The most common size for a failover cluster is the minimum two-node cluster. In high-load environments, a cluster may have many server nodes.
Failover clusters usually use all available techniques to make the individual systems and shared infrastructure as reliable as possible.
Failover clustering Reliability includes features like; disk mirroring, redundant network, redundant storage area network, and redundant electrical power. You need to be up and running at all times.
There isn’t a single high-availability cluster systems to handle failures in distributed computing. There are different strategies.
FAIL_FAST wherein the try fails if the first node cannot be reached, ON_FAIL_TRY_ONE_NEXT_AVAILABLE which tries one more host before giving up, and ON_FAIL_TRY_ALL_AVAILABLE: which tries all existing nodes before giving up.
About Failover Clustering
Most server features and roles can be kept running with little to no downtime.