I can always do this I guess and have two different tier types, SSD to SAS and SSD to SATA. I’d then have to specifically provision volumes into the right pool. It would be good to know if the situation above is as I expect as well. Pool1 12 x SDD 12 x SAS   Pool2 12 x SSD 12 x SATA
Hey guys, I have a query which I'm struggling to get an answer for from docs or sizing tools. Imagine I have the following configuration, I know that two disk types is recommended, just go with it. 24 x SSD in the head unit12 x SAS in an expansion unit12 x SATA in an expansion unit I then provision two virtual pools and want ADAPT. I'd end up with the following as you need 12 drives for adapt. I assume when I create a volume in poo1 it will tier, and if I create one in pool2, it will not. Is this correct? I presume I'd need to end up having RAID 5/6 groups instead and split them across the pool, from what I read tiering is done per volume and the volume ultimately lives in a pool.... I presume the volume on pool2 cannot tier to pool1 as its ultimately on the other controller. Pool112 x SSD ADAPT12 x SAS ADAPT12 x SATA ADAPTPool212 x SSD ADAPT  
ME4 Tier Question