How long do you keep your backups? A backup taken last night is great if your computer gets hit by a bus, but isn't so great if you just discovered that photos you took ten years ago were corrupted sometime between then and now.
How long do you keep your backups? A backup taken last night is great if your computer gets hit by a bus, but isn't so great if you just discovered that photos you took ten years ago were corrupted sometime between then and now.
The solution to that is rolling backups with different tiers.
1 backup updated daily
every week you update the weekly backup
every month you update the monthly backup
every year you update the yearly backup
and so on or with whatever precise timings make sense for you
Keep at least the last two snapshots for each.
Also, do use error correction codes so you can recover partially damaged backups.