My mainboard have sata, sas and usb 3.0 (on mainboard) ports for drives connection. I just ordered 2 the same 120gb ssd drives to create ZFS RAID1. Where I should install sytem and keep virtual systems? Can everything be stored on these drives, or do it somehow differently, f.ex Proxmox on 16gb usb drive and virtual systems on sdds, or maybe some other way?