Design and implementation of dynamic incremental migration based on Xen

The existing migration mechanism calls for a shared storage service between the source host and the destination host, which is a necessary condition for dynamic migration. This paper proposes a dynamic incremental migration including external memory based on Xen virtual Machine, by analyzing the principles and limitations of the existing migration mechanisms. This approach makes the migration between physical hosts do not rely on shared storage any more, and widens the scope of migration technology. Performance analysis and experiment results show that the approach is feasible.