On 16/04/12 11:50, Andreas Piening wrote:
> Hi,
>
> thank you for your response.
>
> At the moment I don't use disk images. Instead I use LVM volumes which are 
> directly connected to my KVM-machines.
> There is a way like creating images of the LVM volumes with a image tool like 
> partimage. These images would be compressed like 50GB in combined size, no 
> problem to copy it to an external usb drive but much data to transfer over a 
> VDSL50 internet connection.
> The point is that the customer wants me to backup the whole system 
> (real-server including 2 VMs) over the network to a different location. So 
> when the server gets unusable damaged for instance by beeing flooded with 
> water because of a pipe-break, or the system gets stolen, I should be able to 
> buy new hardware and get back to the state one day before the disaster 
> occurred.
>
> I like the efficient way of file based backups backupPC uses, so I ask for 
> experiences on that. But maybe I should search for a partition image tool 
> that supports incremental backups. I only know of Acronis True Image but this 
> is a commercial (and not cheap) way.

If you rip the LVM disk images to a file backuppc will just backup the 
changes as that's how rsync works, however this requires you to the 
storage to image the disk to a working location.

Your other option if you are looking for disaster recovery is something 
like DRDB and a live snapshot of the VMs to a remote location. This is 
not backup as the remote image is updated live so make a change and it's 
replicated to the remote location very quickly, but it is a DR option.

-- 
Tim Fletcher<tim AT night-shade.org DOT uk>


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