Virtensys VIO-4000 series of appliances enable the creation of an I/O cloud. A single domain within which the entire data center’s server I/O resources are managed as a unique entity. In this environment, any individual server’s I/O profile can be changed and dynamically moved to another server without any physical reconfiguration and without disruption to service. This allows an IT manager to dynamically provision servers and easily move an application from one server to another, thereby improving data center flexibility, manageability and agility.