BackupPC-users

[BackupPC-users] My backup method across VPN

2010-07-01 06:40:20
Subject: [BackupPC-users] My backup method across VPN
From: Saturn2888 <backuppc-forum AT backupcentral DOT com>
To: backuppc-users AT lists.sourceforge DOT net
Date: Thu, 01 Jul 2010 06:38:40 -0400
I would do successive incrementals, but only if the same exact files aren't 
changing each time. For instance, successive incrementals do not benefit you if 
files X changed today, and it changes tomorrow, and it changes the next day 
only if file X is the file that chances the most.

If file X is a text file, successive incrementals might be useful so long as 
the same blocks of text from the day before still exist in the file. This is 
going to be pretentious for any file whose changes persist day to day even if 
there are changes.

The one time you, for-sure, want to use successive incrementals is if you have 
the processing power, disk space, and amount of files that change day-to-day to 
require it. Especially if you're on a limited line like a VPN over the 
Internet, it would be beneficial to check for changes from the day before than 
say 6 days before as you'd wanna copy less information rather than more.

The more successive incremental levels you add, the slower it goes. 6 will 
always yield decent speeds. I have mine setup at home for 8, but even that 
might be too much for a one-drive setup. I used to have it setup for 60 and 
each incremental past level 18 would start to show slowdown. It would start to 
take 6-7 hours to backup the same host that, at lower incremental levels, took 
only a few tens of minutes.

I would try the successive incrementals and see where it takes you. Test 
between them both for 2 different weeks and that will tell you which to choose 
for sure. I like successive incrementals, I just don't like using them at 
higher levels because it really really begins to slow things down.

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