BackupPC-users

Re: [BackupPC-users] splitting backups... how?

2008-05-31 07:04:39
Subject: Re: [BackupPC-users] splitting backups... how?
From: Adam Goryachev <mailinglists AT websitemanagers.com DOT au>
To: Mauro Condarelli <mc5686 AT mclink DOT it>
Date: Sat, 31 May 2008 21:04:26 +1000
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Mauro Condarelli wrote:
> Hi,
> I have two problems:
> 
> 1) I have to backup multiple servers and their composed storage exceeds
> the capacity of my current backup media (500Gb SATA disk); I will add a
> second one and that would be enough (for the time being). Problem is I
> would like to avoid using Virtual Volumes (LVM), if at all possible, so
> I thought I could backup some servers on one disk and others on the
> other, but I don't know how (end if it is possible at all), since I see
> only one TopDir setting and nothing comparable in the per-host configs.
> How should I proceed?

You can use RAID0 from the md driver without LVM to join the two drives
together..... Same result though. You won't get the same benefit of
pooling files if you use two separate media, so backuppc requires all
backups be stored on the same filesystem.

> 2) I am a bit confused about the schedule configuration. What I would
> like to achieve is just a single backup cycle: Full backup once a week
> and daily Incremental ones; as soon as I have a complete new Full I want
> to discard all old ones (Full & Incremental). What is the right setting
> to achieve this?

I don't think backuppc will quite satisfy this requirement. If you keep
2 full backups and 6 incremental backups, then by the time you do the
third full backup the oldest full will be discarded. So you can have a
minimum of 2 full and 6 incremental (well, you can have 0 incremental
and 7 fulls, but your backups will take longer).

Regards,
Adam
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