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Date:      Mon, 11 Apr 2016 08:19:20 +0100
From:      Matthew Seaman <matthew@FreeBSD.org>
To:        freebsd-questions@freebsd.org
Subject:   Re: Desktop reconfig
Message-ID:  <570B4FF8.4030906@FreeBSD.org>
In-Reply-To: <5709129B.8070508@columbus.rr.com>
References:  <5709129B.8070508@columbus.rr.com>

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From: Matthew Seaman <matthew@FreeBSD.org>
To: freebsd-questions@freebsd.org
Message-ID: <570B4FF8.4030906@FreeBSD.org>
Subject: Re: Desktop reconfig
References: <5709129B.8070508@columbus.rr.com>
In-Reply-To: <5709129B.8070508@columbus.rr.com>

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On 09/04/2016 15:32, Baho Utot wrote:
> New setup will have freebsd on raidz with Win7 on the SSD only.
>
> Can I install the four drives for the raidz, configure and install
> freebsd then remove ada1 when I have it all working?  or should I remov=
e
> ada1 then install the raidz drives install then reinstall ada1 and the
> pull everything over?

Yes, this should work fine, but you'll need to be careful that you don't
accidentally overwrite the wrong drive from the installer.  Depending on
the details of your hardware it's entirely possible that the new drives
you add for ZFS could end up as ada0, ada1, ... with your previous
drives as ada4 and ada5.  Taking out the original ada1 while doing the
initial install would be a simple way of avoiding that.  ZFS should
continue to work just fine as you shuffle the disks around.

> Will the installer handle installing root to zfs raidz? or will I have
> to wing it?

Yes, this will work absolutely fine.  The installer can work with any of
the different RAID levels provided by ZFS.

> Going for a clean install and synth to do the ports.

In the long term, you don't want to mix ZFS and UFS in the same system
-- the two filesystems will fight over memory.  It shouldn't be a
problem to do that temporarily while you're copying your data onto ZFS
though, so long as you unmount the UFS partitions once you're done.

	Cheers,

	Matthew



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