[Samba] Large Backups to Windows

Jeff Ross jross at wykids.org
Tue Jul 22 21:43:51 GMT 2008

Justin Pittman wrote:
> Hi,
> This is a kind of scenario question for best practices -- within limits.  I've
> inherited a less than ideal backup situation: backups are transferred from
> Samba to Windows.  I can't get out of this situation without major
> re-engineering and the only problem is the time it takes to do full backups.
> Specifically:
> -200GiB is taking a few days to backup
> -Cpio is doing the backup across cifs
> Here are optimizations I've tried so far:
> +switch from smbfs to cifs -- yes this is an old-ish system but Samba 3.0.10
> +mount local noatime
> +installed 1G more memory -- almost 1.5G is cached
> +verified low processor & vm usage -- data i/o doesn't
> +appear to be spreading to other subsystems configure Windows for larger
> +FS cache
> These Samba and Windows hosts are on the same network (and the same, Gig
> switch as far as I can tell).  What scares me is the latency of backups
> (because it's really no longer a Saturday backup) and the time to
> restore.  Anyone
> tried cpio & smbd blocking factors? Or what other networking suggestions are
> there?  The only kind of tweaking I've done is for tape backups but that was
> local to a host ...
> Justin


DeltaCopy has a windows rsync client that works great to push files out 
to a samba server.  There is an rsync server as well, but I've not yet 
had to use it.


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