IT Examiner School, Providence, RI

Types of Virtual Environment(s)

Full Virtualization ‐ almost  complete simulation of the  actual hardware to allow  software to run  unmodified

Partial Virtualization ‐ some  but not all of the target  environment attributes are  simulated.  Some “guest”  programs may require  modifications to run in such  environments

Storage Area Networks (SANs)  ‐ collection of computers and  storage devices dedicated to  store and protect data from  across local and wide area  networks

How do businesses use VM?

Network Virtualization ‐ combining  available resources in a network by  splitting the available bandwidth and  channels Storage Virtualization ‐ pooling of  physical storage from multiple network  storage devices into what appears to be  a single storage device, e.g. SAN(s)

Server Virtualization ‐ using software to  divide a physical server into multiple  isolated virtual environments

Desktops Virtualization ‐ essentially the same as  server virtualization