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Virtualization techniques greatly benefit cloud computing. Live migration enables a datacenter to dynamically replace virtual machines (VMs) without disrupting services running on them. Efficient live migration is the key to improve the energy efficiency and resource utilization of a datacenter through dynamic placement of VMs. Recent studies have achieved efficient live migration by deleting the...
Recently, virtualization has been an increasingly popular trend in cloud computing due to its ease of administration and efficient resource allocation. Hardware virtualization reduces the overhead of virtualization and significantly improves the performance, comparing favorably to that of physical machines. However, hardware virtualization is complicated to configure and thus is not widely used. This...
Live migration of virtual machines over a wide area network has many use cases such as cross-data center load balancing, low carbon virtual private clouds, and disaster recovery of IT systems. An efficient wide area live migration method is required because cross-data center connections have a narrow bandwidth. Page cache occupies a large portion of the memory of a Virtual Machine (VM) when it executes...
In Infrastructure-as-a-Service datacenters, the placement of Virtual Machines (VMs) on physical hosts are dynamically optimized in response to resource utilization of the hosts. However, existing live migration techniques, used to move VMs between hosts, need to involve large data transfer and prevents dynamic consolidation systems from optimizing VM placements efficiently. In this paper, we propose...
Virtualized IT infrastructures combined with virtual machine migration technologies have a potential to support IT services that are resilient to partial physical infrastructure failures caused by extreme events. This paper experimentally evaluates the migration of multiple VMs across long geographical distances — an activity that is required to move virtualized IT systems from a disaster site to...
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