Re: [PLUG] Best Solution for Multiple Volume Backups

[Rich Freeman via plug <plug@lists.phillylinux.org>]

On Mon, Jul 13, 2020 at 3:13 PM Keith C. Perry via plug
<plug@lists.phillylinux.org> wrote:
>
> 10+TB is very large change set.

Well, transfer-wise, yes, but one hard drive these days can hold more
than that.  But I did want to make it clear that I'm not looking for
"create a tarball and stick it on a USB stick."

> Have you considered running nilfs2 for your backup system filesystem and dumping that data to an LTO tape set?

LTO seems a bit overkill/expensive for my needs here.  While I'm over
10TB I'm not talking about hundreds of TB.  An LTO drive costs
hundreds of dollars just for something old like LTO5, and you also
need to make sure you're getting the right combo of drives,
enclosures, HBAs, and so on (plus a host to stick all this stuff in).

For just 10-20TB stored to hard drives I can just use modestly-priced
USB3 hard drives which keeps things simple.

If I were over 100TB then LTO would make a lot more sense.  Or if I
wanted to be more rigorous with my backup sets (tapes are marginally
cheaper so you can afford to have a few extra just to rotate them more
effectively).

> What I currently do dump to an 8Tb filesystem container on my LizardFS net.

Much of this data is medium-priority data already on LizardFS with
snapshots/redundancy/etc.  In theory it isn't the end of the world if
I lose it so I don't want to spend a fortune on backup.

However, I'm reaching a point where if I just lost it all that would
be pretty frustrating, so having an offline copy of the more valuable
stuff would be desirable.

I'm starting to look at Bacula but reading the docs just serves to
remind me why I got away from it in the first place.  It is fairly
tape-centric and it seems to be lacking when it comes to the concept
of "please insert disk 2".  Granted, with USB3 hard drives I guess I
could mount more than one at a time if I had to.  It is just really
clunky.

I should look at duplicity and see if that can easily span multiple
drives.  I've never used it that way.

Oh, I didn't mention it up-front, but encryption would also be useful.
If I were desperate I could probably use LUKS on the disks but if the
backup software can natively do encryption that would be ideal.  I'm
trying to move more to encrypted disks for just about everything
because then when a disk dies I don't have to worry so much about
wiping/etc - just toss it in the trash...

-- 
Rich

-- 
Rich
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