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Dagan McGregor wrote:
> 
>> -----Original Message-----
>> From: bacula-users-bounces AT lists.sourceforge DOT net
>> [mailto:bacula-users-bounces AT lists.sourceforge DOT net] On Behalf
>> Of Timo Neuvonen
>> Sent: Monday, 25 August 2008 2:23 AM
>> To: bacula-users AT lists.sourceforge DOT net
>> Subject: Re: [Bacula-users] How much space does Bacula need?
>>
>> Catalog is important to remember when estimating system disk space
>> requirements, especially if long retention times are needed. I think
>> somewhere in the documentation is a formula how to estimate
>> catalog size.
>> And I think I've seen some postings on the Bacula list that
>> mention over 10
>> GB catalog sizes. In my system (a few servers only), catalog
>> is below 500
>> megabytes.
> 
>  Firstly, thanks for all the replies so far!
> 
>  I will be running a back-up of maybe ~10 CentOS servers, not all of which 
> will be entirely stored on tape, mostly the more important files and database 
> dumps.
> 
>  The back-up server I have has a 500GB HDD dedicated for the back-ups, and if 
> I rebuild it and install the CentOS .el5. RPMS, which appear to reside in 
> /var/lib/bacula with configs in /etc/bacula, then I think I may need to re-do 
> the partition plan for that machine to allocate space more efficiently.
> 
>  Because I am going to use bacula to back-up ESX VMs, I was hoping that I 
> could copy the VM files and snapshots to somewhere on /home on the back-up 
> server, have bacula-fd on the back-up server pickup those files to write to 
> tape.
>  Then inside each VM, run bacula-fd to back-up the key files to the back-up 
> server written to tape.
> 
>  Pardon my ignorance, but I am assuming here that all spooling only takes 
> place on the server running bacula-sd, the back-up server, as each bacula-fd  
> instance pushes the files across the network to that location. If that is the 
> case, and spooling location is configurable, I can set that to somewhere in 
> /home/bacula and make use of that space.
> 
>  Network back-up tools in Linux are fairly new to me, and I am trying to get 
> my head around the Bacula architecture before rolling out all the new 
> servers, thus my emails :)

Judging from your situation, which is roughly similar to mine, and
depending on your retention times, you can reasonably expect to see a
catalog size of between 250MB and 750MB. Mine is about 400 right now. I
backup about 11-12 machines, none backing up the whole OS. One machine
has many small files though. The backups of the catalog compress with
GZIP down to about 65MB, which is something to consider. Makes life a
little easier in the disk space department (this is the only place I ran
into trouble as I was using file volumes for them).

I think a 500MB range is a fair estimation though.

- --
 ---- _  _ _  _ ___  _  _  _
 |Y#| |  | |\/| |  \ |\ |  | |Ryan Novosielski - Systems Programmer II
 |$&| |__| |  | |__/ | \| _| |novosirj AT umdnj DOT edu - 973/972.0922 (2-0922)
 \__/ Univ. of Med. and Dent.|IST/AST - NJMS Medical Science Bldg - C630
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