Post by Robert Peirce Post by Jolly Roger
That means you are using a really shitty "backup" solution. How are
you backing up?
I'm using SD! but I'm told CCC is the same. Both produce a clone by
adding, updating and deleting to make the destination look like the
source. That's fine 99% of the time but not if you inadvertently
delete something on the source and then do a backup.
Although I have CCC, I use SD! because I've used it for years and
haven't wanted to make the switch. However, I asked Shirt Pocket if
there was a way to issue a warning and prevent the deletion phase of
the backup. There isn't. I'm trying to find a backup solution that
can do that.
No, what you want is an incremental backup solution like Time Machine,
where you can restore files from the backup that have long been deleted
on the computer just by rolling back to the appropriate snapshot and
restoring that file from it. And as a bonus, Time Machine does indeed
issue a warning whenever it runs so low on space on the storage volume
that it needs to delete a previous snapshot.
Post by Robert Peirce
That is a solution I use on my MBP, but this is an add-on HD that I
also connect to other computers that can deal with iTunes. Can Time
Machine even work with this?
Don't do that. As a best practice you should never use a backup medium
for anything other than backups. Otherwise you put your backup data at
risk. Time Machine is designed to consume as much space on the backup
drive as needed for backups, which means it will eventually fill up,
especially if you continue to add extraneous non-backup files to it.
You should always use a dedicated drive for backups.
Post by Robert Peirce
When I open Time Machine preferences it allows me to select the
destination drive but not the source. The add-on drives are in the
exclude list and I guess I could include them but how do I restrict
backups to ONLY use the external HD as a source? Please let me know
how because it definitely would solve my problem.
Use Time Machine to backup your entire system including this external
drive to a dedicated backup drive. Problem solved.
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