"Remember kids, the only difference between Science and screwing around is writing it down" -Alex Jason (made popular by Adam Savage)
I have been traveling around lately talking about VVols and one of the most commonly misunderstood objects is the VVol datastore. What is it? What does capacity mean on it? Why does it even exist?
These are all good questions. The great thing about VVols is that very little changes in how the VMware user interacts with vSphere. But at the same time, what actual happens is VERY different. So let’s work through this.
I have been talking a lot about Virtual Volumes (VVols) lately with customers and when I describe what they are a frequent response is “oh so basically RDMs then?”. ..
…ugh sorry I just threw up in my mouth a bit…
The answer to that is an unequivocal “no” of course, but the question deserves a thorough response.
So first let’s look at how they are the same, then let’s look at their differences. And not just how they compare to RDMs, but also VMDKs as you traditionally know them.