Ok so I do realize RAID is not for backup and everytime I suggest it people go crazy .
But what is the alternative? Let's say I have 10 HDDs. The only options I have found in OMV so far is RSYNC. This is definitely a bakcup, but then capacity-wise it's really a bad idea. So basically if I have 10HDDs I end up with 5 usable ones.
My initial thought was to use RAID5 which makes me lose 1 HDD capacity.
Please enlighten me if there are better backup options which would not be that aggressive on usage of capacity.
Thanks!