Virtualizing Storage-Area Networks
A virtual storage-area network (VSAN) is a collection of ports from a set of connected Fibre Channel switches, which form a virtual fabric. Ports within a single switch can be partitioned into multiple VSANs, despite sharing hardware resources. Conversely, multiple switches can join a number of ports to form a single VSAN. VSANs were designed by Cisco, modeled after the virtual local area network (VLAN) concept in Ethernet networking, and applied to a SAN. In October 2004, the Technical Committee T11 of the International Committee for Information Technology Standards approved VSAN technology to become a standard of the American National Standards Institute (ANSI).
A VSAN, like each FC fabric, can offer different ...
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