Why go with 3.5' disks? You usually want 2.5' and you can fit 24 ones in 2HE. I recommend those using a supermicro cabinet. 2 cache SSDs and 20 SAS disks (+ 2 s

Why go with 3.5' disks? You usually want 2.5' and you can fit 24 ones in 2HE. I recommend those using a supermicro cabinet. 2 cache SSDs and 20 SAS disks (+ 2 spares) in combination with a raid controller will give you very much quite fast storage at a sweet price spot.