Virtualization Products: Volume Managers and SAN Virtualization Systems

Two basic types of virtualization products are analyzed in this chapter—volume management software and SAN virtualization systems. SAN virtualization systems can be further classified as using either an in-band approach or an out-of-band approach.


Storage virtualization technology is the heart and soul of storage subsystem controllers. However, while storage subsystem controllers tend to have extremely powerful virtualization capabilities, they are not often referred to as being “virtualization” products, per se.

Yes, this is another one of those confounding areas where the language of storage makes things more difficult and convoluted than they need to be. The term ...

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