From the course: Cloud Security Operations by Pearson

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Clustered host availability

Clustered host availability

High availability clusters are collections of hosts, in other words, physical host machines that function as a single system. They offer uninterrupted availability of operating system images and application stacks. High Availability Clusters are used for mission-critical virtual applications, like databases, e-commerce websites, containerized applications, and transaction processing systems. The clusters are typically used for load balancing, high availability backup, and failover use cases. To successfully build an HA cluster, all of the hosts in the collection set must have access to the same shared storage pools. In case of a failure, a virtual machine on one host can failover to another host without undergoing any interruption of activities. The number of nodes in a high-availability cluster will fluctuate between three to up to dozens of nodes, for example, in a cloud security provider datacenter. Datacenter administrators should be cognizant that adding too many virtual machines…

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