Server Groups

Server groups can be used to control the affinity and anti-affinity scheduling policy for a group of servers.

An affinity policy for a server group denotes that all the virtual machine instances belonging to the server group would be hosted on a single hypervisor host.

An anti-affinity policy for a server group denotes that each virtual machine instance belonging to the server group would be hosted on a different hypervisor host.

An anti-affinity policy facilitates fault tolerance through redundancy, and helps in disaster recovery.