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More and more virtual machine (VM) images are continuously created in datacenters. Duplicated data segments may exist in such VM images, and it leads to a waste of storage resource. As a result, VM image deduplication is a common daily activity in datacenters. Our previous work Crab is such a product and it is on duty regularly in our datacenter. The size of VM images is large and the amount of VM...
Virtualization greatly improves resource utilization in IaaS platforms, but it also introduces potential interference between virtual machines (VMs). For example, VMs may suffer from performance degradation, when they are located in one host and compete for sharing physical resources. Thus, how to efficiently monitor and quantify the VMs interference becomes a key challenge for IaaS providers. In...
As most clouds are based on virtualization technology, more and more virtual machine images are created within data centers. Depending on the need of disaster recovery, the storage space used for backup would easily sprawl to a TB or PB level with the growth of images. Unfortunately, different images have a large amount of same data segments. Those duplicated data segments will lead to serious waste...
Virtualization has been widely adopted by lots of business companies. It is now becoming an effective way to manage massive hardware resources in flexible scales. While power and hardware cost can be significantly saved through virtualization, the fault detection of system becomes more difficult due to the increasing scalability and complexity in a virtualized environment. In this paper, a fault detection...
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