A challenge for any cloud installation is the constant tradeoff of availability versus security. In general, the more fluid your cloud system (i.e., making virtualized resources available on demand more quickly and easily), the more your system becomes open to certain cyberattacks. This tradeoff is perhaps most acute during active virtual machine (VM) migration, when a VM is moved from one physical host to another transparently, without disruption of the VM’s operations. Live virtual machine migration is a crucial operation in the day-to-day management of modern cloud environment.
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