Bacula-users

Re: [Bacula-users] Overhead of incremental backup ???

2010-02-12 09:09:37
Subject: Re: [Bacula-users] Overhead of incremental backup ???
From: Martin Simmons <martin AT lispworks DOT com>
To: bacula-users AT lists.sourceforge DOT net
Date: Fri, 12 Feb 2010 14:06:53 GMT
>>>>> On Thu, 11 Feb 2010 10:36:36 +0530, haridas n said:
> 
> Hi ,
> 
> I'm Using bacula 3.0.3 for to backup number of servers,in which some servers
> got lot of data around >110 GB .So due to the lack of space in the backup
> server to constantly  maintain a backup for more than one month period, I
> forced to remove the differential backup from the schedule and now it take
> only full and incremental backup for all my serves (one month cycling).
> 
> This is the schedule for this month period for all the clients.
> ---------------------------------------------------------------------------
> 
> 2010-01-24 23:55 : mail.net-pool (Full)
> 2010-01-27 02:05 : mail.net-pool (Incremental)
> 2010-01-31 02:05 : mail.net-pool (Incremental)
> 2010-02-03 02:05 : mail.net-pool (Incremental)
> 2010-02-07 02:05 : mail.net-pool (Incremental)
> 2010-02-10 02:05 : mail.net-pool (Incremental)
> 2010-02-14 02:05 : mail.net-pool (Incremental)
> 2010-02-17 02:05 : mail.net-pool (Incremental)
> 2010-02-21 02:05 : mail.net-pool (Incremental)
> 2010-02-24 02:05 : mail.net-pool (Incremental)
> 2010-02-28 23:55 : mail.net-pool (Full)
> 2010-03-03 02:05 : mail.net-pool (Incremental)
> 2010-03-07 02:05 : mail.net-pool (Incremental)
> 2010-03-10 02:05 : mail.net-pool (Incremental)
> 2010-03-14 02:05 : mail.net-pool (Incremental)
> 2010-03-17 02:05 : mail.net-pool (Incremental)
> 2010-03-21 02:05 : mail.net-pool (Incremental)
> 2010-03-24 02:05 : mail.net-pool (Incremental)
> 
> ------------------------------------------------
> 
> Now I have one doubt about, if we increase the number of incremental
> backups this would have any problem to the backup time.I need only for
> one month period for my clients. So please help me to know more about this ..

Incremental backup saves less data so it should be faster than differential
backup in general.  Restoring might be slower because it has to read more
jobs.

Also, look at using the accurate=yes fileset option (to track deleted/renamed
files) because that is more likely to happen for incremental backups.

__Martin

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