Re: (OT) Backup Software Suggestions

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Author: Matt Graham
Date:  
To: Main PLUG discussion list
Subject: Re: (OT) Backup Software Suggestions
On 2017-01-26 17:05, Eric Oyen wrote:
> why not just use dd and a sufficiently large backup device connected
> directly to the machine? [...] Basically, I just image the entire
> device. It's easier to restore that way.


dd is usually not a good way to back things up because of speed. "dd
if=/dev/mapper/vg-home of=/dev/disk/by-id/usb-123456 bs=1M" would take
90 minutes every time it ran because it's transferring 300ishG. "rsync
-av --delete-after /home/ /mnt/backup1/home/" usually takes 2-5 minutes
because it's only transferring the files that have changed, which is
usually 150-500M or so.

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