Users with the Amazon EC2 service Star
Technology Projects Centres for example, do not know where their
VM Star Technology Project Centres instances run. It is
up to the cloud provider to make sure the Star Technology Projects
Centre underlying physical Star Technology Projects Centers
machines (PMs) have sufficient Star Technology Project Centre
resources to meet Star Technologies Projects Centres their
needs. VM live migration technology makes it possible Star
Technologies Project Centres to change the mapping Star
Technologies Project Centre between VMs and PMs while
applications are running Star Technologies Projects Centre.
However, a policy issue remains as how to decide the mapping
adaptively so that the resource demands of VMs are met while
the number of PMs used is minimized.