Integrating solid state storage as a VMware cache isn’t a trivial task. In fact, it’s become the core challenge for some of the best minds in storage, and few real answers have yet emerged. This will be a primary area of focus for me and others who watch and comment on virtualization and enterprise storage!
I am often questioned during my Storage for Virtual Environments seminar presentations about VMware’s Pluggable Storage Architecture (PSA). This system is fairly straightforward and concept: VMware provides native multipathing support for a variety of storage arrays, and allows third parties to substitute their own plug-ins at various points in the stack. But the profusion of acronyms and third-party options makes it difficult for end-users to figure out what is going on.