SDDC capacity planning
As the SDDC architect, you look at the big picture. Hence, it is important that you know your architecture well. One way to easily remember what you have is to keep it simple. Yes, you can have different host specifications—CPU speed, amount of RAM, and so on—in a cluster. But that would be hard to remember if you have a large farm with many clusters.
You also need to know what you actually have at the physical layer. If you don't know how many CPUs or how much RAM the ESXi host has, then it's impossible to figure out how much capacity is left. Sounds obvious, right? Who does not know how much physical resource he has!
Well, it's not so easy, actually.
We will use storage as an example to illustrate why it is hard to know what you actually have. Do you know how many IOPS your storage actually has?
Indeed. You only know roughly. There are too many "it depends" factors in the answer.
Once you know the actual raw capacity, you are in...
