It's been a while for me, but as far as I remember that most of the questions were about design, best practices, and configuration maximums. So I think this certification is less suitable for operational use, because then the vSAN cluster is already in operation and doesn't change much. But maybe my memory is misleading and I only remembered these questions because I found them the hardest.
Generally, I don't think that much has changed on the basic concepts and best practices between vSAN 6.2 and 6.7 either. Just a few features were added. I therefore think that more than 50% of the questions do not need to be changed and also applies to vSAN 6.7.
"Question: Is it worth to certify a 2017 version in 2019 or should I wait for a 2019 edition (not sure if it will come or when)"
In my opinion this exam is well worth studying for if you want to get a better grasp of the fundamentals and many specifics of vSAN - there will likely be a delta for any new exam anyway. From a user/administrator perspective, most of the fundamentals concepts and mechanics are fairly agnostic for all of 6.x other than core changes like Unicast/Multicast, so whatever you learn studying for this exam will make any future exam easier.
"It's been a while for me, but as far as I remember that most of the questions were about design, best practices, and configuration maximums. So I think this certification is less suitable for operational use, because then the vSAN cluster is already in operation and doesn't change much. "
sk84, I feel that (where possible) any administrator of any environment should understand as much as they can about the products their workloads rely on - this helps make them more capable and efficient administrators. Thus I would tend to disagree that the content is only useful before deploying/designing vSAN as the blueprint covers a lot of topics:
It is of course entirely possible your exam had more questions from the design perspective than average, I recall mine (2 years ago) being quite varied - but then again it's not that long an exam so it is potentially more possible to be (or seem) skewed.
TheBobkin, I agree with you and I may have expressed myself in a misleading way.
Of course the knowledge about concepts, basics and designs is always useful and helps to be a better admin in the daily work. I also didn't want to say that imfaisal87 shouldn't do this exam or that it's a bad exam at all.
But if you look at the exam blueprint, you can see that out of 9 sections, only 3-4 focus on daily operations (4, 5, 7 and maybe 8). That's what I wanted to say. But that doesn't mean that the other 5-6 sections are useless, because the knowledge about vSAN fundamentals and design concepts helps to make better decisions as administrator. Like you said before, Bob.
Thanks to both of you for your feedback.