Abstract
This paper presents the recent technical research survey on the efficient live migration of virtual machines. Virtual machine migration is required for many reasons like load balancing, energy reduction, dynamic resizing, and to increase availability. Live migration is an important feature of virtualization technology. Virtualization technology has gained toehold with ascend of cloud computing. Simply, virtualization runs multiple virtual machines on the single physical machine. Virtual machine is a software based component which is an abstraction of the underlying hardware provided by the virtualization technology. Availability can be efficiently achieved by managing the virtual machines properly. For this, there is a need to migrate virtual machine from one physical machine to another, without expending long migration time and downtime. Virtual machine is running, while the migration is in progress is known as live migration. There are many techniques proposed to enhance the live migration, and reduce its duration This paper reviews the different approaches which have been proposed by researchers to improve the live migration by decreasing the downtime and total migration time. This paper can be useful for the researchers to work on this field.
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