BackupPC-users

Re: [BackupPC-users] Full and Incrementals Backup question

2010-04-17 11:17:31
Subject: Re: [BackupPC-users] Full and Incrementals Backup question
From: Luis Paulo <luis.barbas AT gmail DOT com>
To: innop AT voila DOT fr
Date: Sat, 17 Apr 2010 07:50:03 +0100
Inno,
If files are all different, and you modify 10GB every day keeping the 600 total, I think (pretty sure) that yes, on the 4th you'll have the original 600GB plus the 40GB differences.
That with incrementals.

With fulls every day, you'll have just 600GB every day, total on the pool (we are not minding about compression), after the cleanup.

(Really hope Les don't mind me saying what he said with other words. I'm taking the chance to think loud with Inno.)

But fulls are slower, even with rsync. That also means that with tar or samba are even slower. You know why?
I'm going to go through http://www.samba.org/rsync/documentation.html. Something scared me first time, and I didn't return.

Thanks, Les

Regards
Luis

On Fri, Apr 16, 2010 at 9:45 PM, Inno <innop AT voila DOT fr> wrote:
But if I have many data : 600 GB for a full and 10 GB modify by day. An incremental it's better ? Because if I have a differential backup I have 10 GB the first day, 20 GB the second day... 40 GB the fourth day... ... no ?

M T W T F S S <- Day
I I I I F - - <- Backup
1 2 3 4 0 - - <- Level
10 20 30 40 600 <- GB


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