Automated storage tiering is one of the most discussed storage array features during the past year. It means the ability of the storage array to move chunks of data between different disks types and raid levels to meet the right balance between performance and space usage avoiding the so called hot-spots.

This article will not point out which one is the best, my objective is to do a 360° review of all the most important metrics you need to evaluate in different ATS implementations when you look at them.

Read the whole article at The Register