> Heitor, Josip,
> 
> Thanks for the replies. That does make sense.
> 
> I don't see a huge benefit at the moment from doing differential backups. Most
> of the data which is backed up is not changing but being added to ( so volumes
> are getting bigger due to additional files). In the video its explained that 
> if
> same files are being changed then there is not much benfit in terms of space
> saving for incremental. One thing I didn't understand is why would one do
> incremental AND diff backups? Surely only one should be the strategy right?

It's just an hypothetical example to show the differences between them.

> In theory do incremenal backup will take much less time?

Not necessarily. Lot's of files that are changed during the time are basically 
the same, but it depends on your work load. If you are struggling with backup 
execution duration I would suggest you trying some tuning configuration: 
http://bacula.us/tuning/ 

> But as you mention restore will be slower. Need to weigh the pros and cons.
> 
> 
> -----Original Message-----
> From: Josip Deanovic [mailto:djosip+news AT linuxpages DOT net]
> Sent: 17 August 2015 12:54
> To: bacula-users AT lists.sourceforge DOT net
> Subject: Re: [Bacula-users] Choosing a backup strategy
> 
> On Monday 2015-08-17 12:09:15 Waqar Khan wrote:
>> Hi all.
>> 
>> Bacula version: 5.0.0
>> 
>> At the moment I do a full backup at the start of the month then do a
>> diff backup every weekend and incremental backups every evening. I
>> would like a way to speed up the entire backup process. I am thinking
>> of removing the diff backup jobs and only running full and then
>> incremental. Would this be a good strategy? My backups are file
>> volumes and no tapes.
>> 
>> Thanks in advance!
> 
> 
> In my opinion, yes it should be fine but your restore will be a bit slower.
> 
> Differential backups are valuable feature when you are dealing with tapes as
> this would decrease the number of tapes that need to be changed while 
> restoring
> the complete system or huge bunch of files located on a number of different
> tapes.
> 
> If you are using only files as volumes you could still benefit from the
> differential backup but it wouldn't be significant as in the case of tapes.
> 
> If you are trying to speed up your backup make sure that you are not using
> spooling data feature which doesn't make much sense if you are using file
> volumes exclusively.
> 
> 
> --
> Josip Deanovic
> 
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