Why we don't use your grandfather's storage for K8's?

I decided to write this blog because I get asked this question a lot. Why should I use Portworx, when I can use CSI from my existing storage array which is free?

This is a very common question from storage teams and infrastructure teams. Why do you need to pay for storage when I already have it? The answer is a bit complex with multiple rabbit holes. But let's look at this from the VMware, Storage, Core infrastructure teams' perspective.