Good Post by vMiss (thank you)
What are IOPS anyway? Simply put, they are Input/Output Operations Per Second, and they are meaningless.
Wait, what? How could I possibly be calling IOPS meaningless? I’m a STORAGE person! How could I say this? I think that maybe it was one of those metrics that had meaning, at one point. Maybe. Now? Not so much. Here’s why.
Let’s say I go down to the Storage Depot and I’m looking at all the shiny storage controllers on the shelves. I point at the prettiest one, and I ask the helpful person with the name tag how many IOPS I can get out of it.
Read on here