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Date:      Thu, 21 Feb 2019 14:37:51 +0000
From:      Matthew Seaman <matthew@FreeBSD.org>
To:        freebsd-questions@freebsd.org
Subject:   Re: Duplicating file system
Message-ID:  <11802bfa-c3a8-9197-eb59-30d687561135@FreeBSD.org>
In-Reply-To: <0A33E3BE-96C9-4D83-B9F7-D4D2792B5161@kreme.com>
References:  <0A33E3BE-96C9-4D83-B9F7-D4D2792B5161@kreme.com>

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On 20/02/2019 19:52, Cerebus wrote:
> I have an 11.2 system with two identical SSD drives. Currently I am
> using rsnapshot to keep backups of the primary drive on the secondary
> drive, but I am interested in having the second drive have a
> duplicate copy of the entire file system in a bootable form, updated
> as the root drive is modified.
> 
> How would I do this?
> 
> I don’t really want a RAID0 because I want to also keep the periodic
> backups from rsnapshot as the drives are about 10x larger than my
> data.
Well... you could just use a ZFS mirror setup and create snapshots at 
regular intervals, which solves both your 'keeping in sync' and your 
'keep historical backups in a space efficient way' requirements.

	Cheers,

	Matthew



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