Re: SDS -- isn't this what IBM's SVC has been doing for years?
Isn't SVC a virtualization platform running on IBM's Hardware?
Surely it's software abstraction of arrays, but don't think it qualifies as SDI because it lacks hardware independence. And the last time I looked, I didn't think it was capable of creating a RAID device over JBOD, or capable of file support. But maybe I'm wrong.