Hello!! Some recent technical problems on my family’s NAS gave me a big scare and finally pushed me to figure out a way to back it all up. I’m asking here specifically because I really don’t know where to even starts because of the fact I’ve got just under 50 terabytes worth of data stored in a 7-disk RAID-5 and would prefer to keep it cheap. What are your suggestions?
First thing is decide what data you have that can be readily replaced. e.g. publicly available Linux ISOs. Then remove that from your backup strategy. You may end up with a lot less data needing backup.