Ports and physical space for drives aren't free. (Though there's some trade-off available between time/money if you want to DIY.) For my own use, I've found it

Ports and physical space for drives aren't free. (Though there's some trade-off available between time/money if you want to DIY.) For my own use, I've found it isn't worthwhile expanding beyond eight drives rather than getting rid of smaller ones - adding additional ports costs money and it takes more power and space.