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On 13/01/11 07:54, Tyler J. Wagner wrote:
> Ryan,
>
> You're doing exactly what I'm doing, except that you want to rsync just
> differences between the live and spare machines. Unfortunately, you
> can't do so in a reasonable period of time, due to the problem with
> rsync and lots of hard links.
>
> My spare machines are connected by dedicated gigabit fiber in buildings
> 3 km apart. Once a week, I take an LVM snapshot, then use dd+ssh to copy
> the entire 1-TB filesystem image to the spare. This takes 14 hours. It's
> still faster than using rsync.
I'm sure I've seen another backuppc user take advantage of NBD or eNBD
or whatever it is called these days... It essentially takes you're
remote HDD and makes it look like a local drive (I suppose you could use
ATAoE or iSCSI to do a similar thing perhaps, though with NBD the remote
drive could be a md RAID array or whatever block device (or file) you like).
Then just add the remote device as a RAID1 mirror with the live system,
and you have a real-time backup of the backuppc server.
I do this with a file server over gigabit ethernet, and it has worked
very well for years...
Regards,
Adam
- --
Adam Goryachev
Website Managers
www.websitemanagers.com.au
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