One of the more interesting discussion points about CLARiiON is the fact that it runs embedded Windows XP inside. I've had several readers ask me about this, and I've also seen a lot of google queries land on my site looking for more information about this topic.
As a result there's a lot of curiousity: why (and when) was the Windows decision made? The CLARiiON of the 90s was not a Windows solution.
Well, I've got answers. Mind you, it may vary slightly from other answers you might get. I mean, it's been ten years or so since the decision was made. My recollection is from a software architect's point of view. As I recall there was a need to change the CLARiiON architecture for one main reason.
To compete against EMC.