Server virtualization is something that everyone seems to be using in the data center (DC) these days. Server virtualization helps us to achieve some of these goals by allowing us to share hardware resources of a single physical server (host) among multiple virtualized servers (guests).

But the IT environment was not historically designed with such abstractions in mind. Multiple areas of guest mobility may cause issues, but for this article Vladimir Stajić, CCSI at NIL Data Communications, focuses on problems related to the Storage Area Network (SAN).