[K12OSN] OT: Off-site data replication

[Les Mikesell]

On Wed, 2005-04-06 at 13:19, Mike Lichtenwalner wrote:

> What are some alternatives in replicating data in a relatively-live 
> manner? A SAN is an option, but is something that extensive required? 
> Would doing an rsync every 15 minutes bring the box to its knees?

There is a lot of overhead in the directory-scan part of an rsync.  If
you can confine the frequent runs to smaller subdirectories at a time
it will not have much impact.  Since maildir type mailboxes can have
a huge number of files, you might go so far as to script a loop over
individual home directories to rsync one at a time.

And since I haven't mentioned it for at least a week, I'll point out
that backuppc (http://backuppc.sourceforge.net/) does a good job of
normal backups and can run from a remote location if you have the
bandwidth. I don't think I'd run it every 15 minutes, though.

-- 
  Les Mikesell
    les at futuresource.com