For any high-availability service, make sure you have two or more servers that cannot be taken down by the same disaster. Many companies I know locate their fault-tolerant servers at different sides of the same city. Clustering implies that two. more computers share the same database, configuration, and service name. The upside of clusters: When one. node goes down, the others have access to the original’s data and continue to process requests without interruption. If a server or an entire datacenter goes down you should move services to the other waiting virtualized servers.”]
Source: https://www.csoonline.com/article/2634386/are-you-ready-for-the-big-one-.html