2 small RAID NAS boxes
you could also mirror 2 drives - so each holds an exact copy of the other - in case of failure, you still have oneI have two hard drives and copy pasting from one external hard drive to other external hard drive seems challenging esp 1TB of data. I am trying to do part by part even then the windows is crashing on me in the middle. I heard i cannot copy past more than ram size which is 4 gb. please advice