On Fri, Jun 30, 2023, 04:18 Dave Sherohman via BackupPC-users <
backuppc-users@lists.sourceforge.net> wrote

> *I* don't do it, simply because there's little practical difference
>> between rsync'ing directories that don't change and not rsync'ing them.
>>
>
> Just to give reason *I* use it:
> - the cost/benefit of doing full backups for different folders is
> different (fulls take considerably longer than incrementals, and some
> folders like "Downloads" are not worth that extra time)
>
> What's your transfer method?  While retention policy is a good point, the
> post you replied to is correct that there is no extra time required for
> fulls when using rsync.
>
> [...]
>
> Fulls and incrementals take roughly the same amount of time when using an
> rsync transfer method, because rsync only sends changed data over the wire
> either way.
>
I use rsync. But although the *transfer time* is the same, the *checking
time* is not. I use -c on the fulls, so checksums are generated for
everything on the host for full backups (I don't remember if this is the
default on BackupPC 4), while only metadata is checked on the incrementals.
For a modest 600GB host that gives a 32 to 2 minutes time relation.

Best regards,
Guillermo

>
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