[Digikam-users] Re: rsnapshot (was Re: Back-ups on CD/DVD with DAR)

[David Vincent-Jones]

Using rsync (in synchronize mode) backups never need to be deleted and
backups are extremely fast and convenient. 

My entire /home folder including /Pictures can be updated nightly in
less than 3 minutes onto one of my SATA drives.

I further, monthly, rotate drives into my bank safety deposit box.

David

On Thu, 2011-02-24 at 00:15 +0100, Thorsten Schnebeck wrote:
> Am Mittwoch 23 Februar 2011, um 23:16:15 schrieb jdd:
> > Le 23/02/2011 22:09, Thorsten Schnebeck a écrit :
> > > I also prefer a fast local backup. I use a separate backup server
> > > that offers a large NFS network directory for each client.
> > 
> > I see this as a heavy risk. I already had a backup script that happen
> > to delete the backup and the original at the same time :-( - never
> > understood what happen exactly, but I ended with all the files, but
> > zero length (and no hardware problem, no notification, so I noticed
> > this at restore time!)
> > 
> > now I have usb hard drives (two, never connected at the same time) and
> > Blu-Ray disks*
> > of course nothing is never perfect...
> > 
> > jdd
> 
> Hmm, never saw such an error. The only problem I have sometimes with NFS is 
> when using it on an ADSL line via OpenVPN and having an IP change on the 
> client. Now OpenVPN needs some time to recover the connection and NFS can 
> "hang". But in an Intranet NFS is very reliable I trust a network-harddisk 
> combination more than every optical media out there. I have also very positive 
> experiences using Linux ISCSI storage to backup Windows server in an intranet.
> 
> But if such an error you describe happens once, the rsync algorithm should 
> correct it next time. The only time I delete a backup is during rotation. And 
> if rsync failed or is unhappy cron sends me an email.
>  
> And to protect the RAID array I use one of these cheap 5min UPS devices + 
> burst & surge protection. 
> 
> But as you said:
> "nothing is never perfect..." and may I add "a backup is only valuable when 
> you have a simply working restore procedure"
> 
> Bye
> 
>   Thorsten
>  
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