|I could be off-base, but I think keeping a lot of extra archives around leads to slower archive listing, fsck / cache directory resyncing and reconstruction, and restores? |
Mac Time Machine backup defaults: 24 hourly, 30 daily, then as many weekly backups as space allows.
My config for tarsnap-cron: 7 daily backups, 5 weekly, 12 monthly.
It's my personal opinion, but a month is a nice buffer. Three days is shorter than some holiday weekends, not to mention vacations.
In your place, I'd think about switching to one of the helper scripts mentioned in another reply. See if it can work with the archive names as they are now. You can copy archives if you want to fit a new archive naming scheme ( https://www.tarsnap.com/tips.html#copy-archive ). Or, if you're sure you want to stick to the last three days/one month/whatever and YOLO, wait that long, verify the backups, then delete archives from the old method ( https://www.tarsnap.com/improve-speed.html#faster-delete ).
Sent from my iPad
On Jun 26, 2021, at 3:26 PM, Romo Hu <email@example.com> wrote: