In the spirit of letting those around me do all the hard work to generate content for this blog, my colleague was asking about limitations on various editions of vSphere 5.1. I was vague with the answer, but to his credit, he kept looking. Turns out, someone’s asked this question before, and VMware have even written a KB about it (2001113). It’s worth looking at, particularly when you’re moving from 5.1 – 5.5.