Abstract
Virtual machine technology is a good way to separate software and hardware in the same physical machine,and is beneficial to fault management,dynamic load balancing and online server maintenance.It is especially useful in optimizing the performance of data center and cluster.To compare the performance of stop and copy migration and live migration,as well as to compare the impact of different tasks on live migration,this paper migrated four kinds of virtual machines with different tasks in LAN,using XEN as a virtual machine monitor.
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