[geeks] Cheap/reliable backup?

[Michael Parson]

On Mon, 2 Dec 2013, microcode at zoho.com wrote:

> On Mon, Dec 02, 2013 at 02:00:38PM -0500, Lionel Peterson wrote:
>
>> If you want a 'put a backup on an off-line shelf' solution, I kinda like the
>> idea of writing 20-25 Gig on a writeable Blu-Ray disc... (I have no idea how
>> long such discs are readable/archive life).
>
> If I could figure out a way to dump a disk onto Blue Rays I would consider
> it. Making a bunch of right-sized tarballs to fit most media is too
> problematic.

http://unix.stackexchange.com/questions/21373/can-i-automate-tars-multi-volume-feature

The TL;DR:

tar can do multi-volume backups, originally designed for tape.  You can
specify the length of the tape (output file size) and specify a script
to be exectuted when that filesize is hit.  The script would rotate the
file to file-n.

The page also has a script for extracting multi-volume tar sets.

-- 
Michael Parson
Austin, TX
KF5LGQ