Earlier quoted context omitted.
Totally. If you enjoy the config and have the time, by all means. If you just want it to work, by a Synology. Mine has been running strong for several years now and has docker images for my unify controller, pi hole and Plex. Took minimal time to setup and none since that day. Love it Edit: And my encrypted cloud backup in Backblaze B2 was equally as easy to setup and costs a whopping $2 a month for every family pic,…
Redundancy and backup are not the same thing. RAID gets you redundancy but if you get pwnd, you get redundantly pwnd! So you backup to elsewhere. Now you have two copies of your data. Cool. Now you probably can recover from a silly mistake from up to a week ago or whatever your retention period is. However, if you don't monitor your backups, you'll never notice certain snags such as ransomware. OK, that might be low…
I didn’t actually specify it out, but my third backup is an offline SSD that I plug in every once in a while and store at my office. I only mentioned the RAID for local redundancy reasons.
You are right about the data being corrupted, either maliciously or bitrot. The NAS is not accessible outside my home network, so I think I am ok there.
Bitrot would require snapshots and full backups stored over time, which I could do fairly easily but I am currently not.