Re: How to backup of large md raid volumes?

[Victor Helmholtz <victor.helmholtz@gmail.com>]

> On 18 May 2017, at 22:37, Ram Ramesh <rramesh2400@gmail.com> wrote:
> 
> Any one have a method to backup large volumes like md raid6 (16TB)? Since the backup will not fit in one disk (in many cases and mine too) I am wondering, if there is a known/easy technique to backup using multiple usb hard drives. I googed and found a few fancy backup utils/systems like Amanda etc. They are overkill for me. I am choosing not to back up simply because of the complexity of setup as the data in my RAID volume is NOT precious and can be replaced with a week of effort.
> 
> If any one can think of some thing simple, please point me to it and I will do the reading to figure out.
> 
> Thanks
> Ramesh
> 
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If you are looking for the simplest solution you can use tar with --multi-volume option. I use it to create tape backups, but it can be used with hard drives as well. Detailed description of this tar option is available at https://www.gnu.org/software/tar/manual/html_section/tar_79.html

Regards
Victor