[Techtalk] rsync backup script

[Mary]

On Tue, Jun 22, 2004, Dan Shearer wrote:
> On Mon, Jun 21, 2004 at 04:41:01PM -0700, Carla Schroder wrote:
> > Does anyone have a really really cool rsync script they'd like to share? 
> 
> This message is not directly answering the question.
> 
> I'll take a flying punt that you are wanting to use rsync for backup
> purposes.

Actually, I think she wants to document using rsync for backup purposes.

> well for backups for some networks I run. Personally I dislike the
> interventionist nature of even the best-planned backups and so I'll go a
> long way to make them transparent :-) 
> 
> I use and recommend RAID over network block devices. RAID0 is mirroring
> (two discs get written to identically and simultaneously) and RAID5 is a
> clever means of splattering data across more than two discs so that you
> get redundancy and speed. 
> 
> Network block devices are described at http://www.it.uc3m.es/~ptb/nbd/ .
> Imagine a disc in your machine, then imagine that the ribbon cable
> suddenly got converted into a network cable accessible to some other
> machine on the network. That's a network block device.
> 
> You can mirror two network block devices. This gives you an automatic,
> real-time backup. If disc dies the other just keeps going. Recent
> enhancement to the nbd driver make recovering from a mirror problem very
> painless (just as well, because how often might you temporarily lose
> connectivity to your disc the other end of a network wire? Every time
> somebody reads the sign "DON'T UNPLUG THIS WIRE" and get's curious :)
> 
> You can even run RAID0 over two remote discs like this, only they aren't
> remote discs they are remote RAID5 volumes across 4 or 5 discs each.
> 
> -- 
> Dan Shearer
> dan at shearer.org
> -- 
> Techtalk mailing list
> Techtalk at linuxchix.org
> http://mailman.linuxchix.org/mailman/listinfo/techtalk
>