Cs655: Advanced Topics in Distributed Systems/critique

In this work, the authors designed and implemented Xen, an x86 virtual machine monitor (VMM). Xen can be used to create and manage virtual machines on single physical machine. Each virtual machine can run its own Operating system. The authors aimed with their design to host up to 100 virtual machine instances simultaneously on a one modern machine. Another goal is to support wide variety of operating systems in Xen. In addition to that, Xen as virtualization technique brought a number of advantages with and reduced the limitations existing in systems that do not use any virtualization technique.