> -----Original Message-----
> From: Les Mikesell [mailto:lesmikesell AT gmail DOT com]
> Sent: den 17 oktober 2014 14:55
> To: General list for user discussion, questions and support
> Subject: Re: [BackupPC-users] Using NFS to increase backup speed
>
> > Not too many new files daily, the reading is done from a three- or four-disk
> raid0-array, so should be fairly fast I guess.
>
> Do you have a problem completing backups in the time available? And
> if so, with all incrementals or just fulls? Without checksum
> caching, the server side will have to read and uncompress everything
> for the full comparison. With it, after the second full that
> includes a file, only the client side has to do the read. But in
> either case, the really slow operation is when a large existing file
> has a lot of small random changes. For that, the server has to
> uncompress the old file and create a new copy, merging in the changes
> from the remote so it may involve a lot of disk seeking.
I thought I had, and maybe I still do, with the very first full backup.
I was worried the full backup wouldn't complete in the limited time the BPC
server in online.
For practical reasons (well, because of the hd-space available really), the
server used is off during nights in order to save some electricity.
The first backup took some 17 hours...
Today, I just checked, the first incremental backup took just under three
hours, which is completely okay.
I'll need to see how the next full backup performs with the speed tweaks I've
done so far.
--
//Sorin
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