You're missing something, I believe.
Using rsync, only the *first* backup actually transfers every file --
every other file will avoid transferring files that are duplicates. It
may be worthwhile to review the backup times in your logs.
Since incrementals go back to the last full, it wouldn't surprise me if an
incremental backup against a 29-day-old full could actually be slower than
a full backup. Some experimentation here demonstrated that the optimal
full backup period is actually about a week, and after about 10 days, the
incrementals took as long or longer than full backups.
Again, this is rsync; smb is quite different.
> Hello Tino,
>
> Thank you for bringing that to my attention. I have full period set to
> 29.67 with all other parameters as default except for full keep count as
> 2. Inrementals are all default. Blackouts set to zero for the laptops so I
> can specify the hours tailored to each user.
>
> Reason for the Full being as it is... One full per month is fine with me
> so the user is not burdened with an unresponsive, or slow laptop. The
> incrementals backup all data since the last full there four even though I
> only have 6 incrementals available they contain all data since the last
> full, right? sure there is a gap between the last full, say at the
> beginning of the month and an incremental toward the end of the month, but
> I am not too worried about going back any further than the six days. If
> worse cam to worse and a rebuilding of the laptop were to be forced upon
> us, we'd restore the full and the last incremental, right?
>
> So, unless I'm missing something, I should be okay. I'll gladly take your
> opinions, I just don't want the user to be aware that the backup even runs
> during the day. Now, at night, for those users who LEAVE their laptops at
> the office, that is another picture. I will set the period to 6.97 and
> leave the full keep to 2 to conserve space. I hope I am being prudent, yet
> efficient.
>
> Your thoughts?
> Brian
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