These publications highlight the need of security improvements related to virtual machines and virtualization techniques, concern that this paper demonstrates to be valid and urgent.
Cloud architectures exploit virtualization techniques to provision multiple Virtual Machines (VMs) on the same physical host, so as to efficiently use available resources, for instance, to consolidate VMs in the minimal number of physical servers to reduce the runtime power consumption.
Table 1 Virtualization techniques Technique Description Examples Full virtualization The Virtual Machine Monitor emulates a complete machine, based on the underlying hardware architecture.
Current trends bear out that virtualization techniques are no longer limited to computers as virtual machines.
If the user needs to minimize the virtualization overhead, the virtual machines can be created using lightweight OS-level virtualization techniques such as LXC [11].
Recent advances in networking and virtualization techniques allowed us to move Xenbase to a virtual environment, and more specifically to a private cloud.
