I have had more than 2 drives fail at the same time in a 16 drive raid6 setup resulting in a very expensive data loss. That is why I am now researching the best way to keep data backed up. Since cloud backup isn't possible due to limited internet availability I was thinking of converting the nas from a server into a very redundant backup system that will back up files from a few computers on the network. Do you think this is a good idea and if so would you use any raid setup or just mirror a bunch of drives or something? I am struggling to think of a better solution especially since I have lately been so reliant on cloud backups in my other applications. How would you make sure your data is backed up safely?