I don't really understand how to use VSA. But from some reading it seems like I might be able to create the effect, though not with the exact same performance?
Not sure if this works, but could deploy a VSA to hard drive one, and then make it aware of hard drive 2 and hard drive 3. And then is there a way to tell the VSA to automatically replicate everything from HD 2 to HD3? Something like that?