for remote windows hosts, you are probably best advised to either use just
rsync via cygwin or deltacopy, or tunnel that over cygwins ssh or a seperate
VPN connection.
for a remote backuppc server, what would you mirror back to? it wouldn't
make much sense to mirror back to the 'primary' backuppc server as you
wouldn't have access to the files via the web interface.
file count is the real killer with rsync. of you are backing up remote
windowsXP or Vista laptops or even desktops, you will not really run into a
file count issue and I doubt you will even use a whole lot of bandwidth. I
do this now, and here is how:
I used to run just 1 backuppc server but have moved up to 2 full time
backuppc servers plus some test equipment. the reason for the second server
was so that I could have the default configuration of clients set to rsync
and to wake up every 10 minutes. I have a number of laptops in the field
that all connect back via VPN. Whenever they are online and they are in
need of a backup, backuppc gets them on their statically assigned address on
the VPN. I use compression on the vpn so I don't do it with rsync. I have
backup jobs(rsync) QoS'd down so that the remote users dont even notice the
backup going on.
For the number of files they have, rsync counts them all in about 10 seconds
and for the number of files they actually change a normal backup is less
than a minute though some users have some pretty heavy excel files they
change regularly which will make their backup times spike.
Additionally, if they disconnect during the backup, they get a partial and
the next backup will take even less time and backuppc automatically mixes in
the partial and then discards it.
I run all nice server equipment which might be a little out of the norm as I
see a lot of people recyle older hardware but it shouldnt matter a whole lot
for regular laptop users.
I also run an exact copy of each backuppc server at a remote location and
use "rsync -aH" to sync them up. The link is just 512Kb wide but the actual
transfers take less than an hour for the main server that is currently
syncing over 160GB of data. The file list for rsync takes about 1 hour to
compute for a total backup time of something averaging at about 1h45m. I
handle the laptop backup server simliar but I dont do a nightly sync,
instead I sync every hour but put a bandwidth limit on the rsync during the
day of 16KB/s. This is wrapped up in a shell script that checks to see if
an rsync is currently running before starting so I dont have conflicts and
also checks the time because I open up the connection to full speed after
6PM.
I have been doing the main server's sync for about 1 year without issue but
the other server is only a few months old, but I still have not had any
issues.
On Wed, Jul 9, 2008 at 3:24 PM, Les Mikesell <[EMAIL PROTECTED]> wrote:
> dnk wrote:
>
> >
> > Well I am thinking of a dedicated OpenVPN connection between my lan
> > and my data center.
> >
> > How do people find the backup times over an encrypted channel like that?
>
> If you the same encryption method, iti will at least match ssh.
> Anyway, once you have the initial copy, rsync will just be transferring
> the changes.
>
> > My other thought was to maybe install backuppc on a local server, then
> > just rsync off to a remote server periodically.
>
> The huge number of hardlinks in a backuppc archive limits the size that
> rsync can handle.
>
> --
> Les Mikesell
> [EMAIL PROTECTED]
>
> -------------------------------------------------------------------------
> Sponsored by: SourceForge.net Community Choice Awards: VOTE NOW!
> Studies have shown that voting for your favorite open source project,
> along with a healthy diet, reduces your potential for chronic lameness
> and boredom. Vote Now at http://www.sourceforge.net/community/cca08
> _______________________________________________
> BackupPC-users mailing list
> [email protected]
> List: https://lists.sourceforge.net/lists/listinfo/backuppc-users
> Wiki: http://backuppc.wiki.sourceforge.net
> Project: http://backuppc.sourceforge.net/
>
-------------------------------------------------------------------------
Sponsored by: SourceForge.net Community Choice Awards: VOTE NOW!
Studies have shown that voting for your favorite open source project,
along with a healthy diet, reduces your potential for chronic lameness
and boredom. Vote Now at http://www.sourceforge.net/community/cca08
_______________________________________________
BackupPC-users mailing list
[email protected]
List: https://lists.sourceforge.net/lists/listinfo/backuppc-users
Wiki: http://backuppc.wiki.sourceforge.net
Project: http://backuppc.sourceforge.net/
