![]() A carefully designed virtualised environment provides the maximum possible uptime for any application. ![]() The most important benefit of VM live migration is increased uptime and reduced downtime.Server fault: Whenever there is a server fault, VMs are migrated from the faulty server to the target server.Hence, whenever there is a need for server maintenance, VMs from the source server are migrated to another data centre. Server maintenance: Any cloud data center’s maintenance is a continuous process.Server overload: When a source server is overloaded, a set of the VMs from this server is migrated to an underloaded server using any VM migration technique. ![]() VM migration is defined as: “The process of transferring a VM from a physical machine to a target data centre server to achieve load balancing, fault tolerance, server consolidation and server maintenance.”Ī cloud admin can execute VM migration in a cloud data center when any of the following happens: This article takes a quick look at the need for VM migration, its benefits, steps to develop an experimental test-bed for a cloud VM migration environment, and trends in virtualisation technology.Ĭloud computing inherits one of the key features provided by server virtualisation called virtual machine (VM) migration. ![]()
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