I am currently building a server, were I have a 2tb and a 3tb drive installed, next to a 64gb os ssd. I want to build the data drives in RAID10, so I understand it's two RAID1's combined into one RAID0. But do that mean I can start with one RAID1, later on expand with two more drives in a seperate RAID1 and then combine in RAID0 - without loosing data from the original RAID1 set??? The tricky part is what happens when I combine into RAID0, if it needs to clean all drives??