You need backups. RAID or something similar is only necessary if you need redundancy which is most often not as necessary compared to loosing all your data.
RAID is necessary because drives fail, and sometimes you can’t afford, or want, be offline until you can get around to sourcing & installing a new drive, and restoring from backup.
RAID is not a backup.
It is not. But backups are also not RAID.
Yes, obviously.
You need backups. RAID or something similar is only necessary if you need redundancy which is most often not as necessary compared to loosing all your data.
RAID is necessary because drives fail, and sometimes you can’t afford, or want, be offline until you can get around to sourcing & installing a new drive, and restoring from backup.
That is what I said.