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Date:      Thu, 30 Jun 2016 11:32:17 -0500
From:      Chris Watson <bsdunix44@gmail.com>
To:        Ben RUBSON <ben.rubson@gmail.com>
Cc:        freebsd-fs@freebsd.org
Subject:   Re: HAST + ZFS + NFS + CARP
Message-ID:  <678321AB-A9F7-4890-A8C7-E20DFDC69137@gmail.com>
In-Reply-To: <63C07474-BDD5-42AA-BF4A-85A0E04D3CC2@gmail.com>
References:  <20160630144546.GB99997@mordor.lan> <71b8da1e-acb2-9d4e-5d11-20695aa5274a@internetx.com> <AD42D8FD-D07B-454E-B79D-028C1EC57381@gmail.com> <20160630153747.GB5695@mordor.lan> <63C07474-BDD5-42AA-BF4A-85A0E04D3CC2@gmail.com>

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Sent from my iPhone 5

>=20
>>=20
>> Yes that's another option, so a zpool with two mirrors (local +=20
>> exported iSCSI) ?
>=20
> Yes, you would then have a real time replication solution (as HAST), compa=
red to ZFS send/receive which is not.
> Depends on what you need :)
>=20
>>=20
>>> ZFS would then know as soon as a disk is failing.

So as an aside, but related, for those watching this from the peanut gallery=
 and for the benefit of the OP perhaps those that run with this setup might g=
ive some best practices and tips here in this thread on making this a good r=
eliable setup. I can see someone reading this thread and tossing two crappy E=
thernet cards in a box and then complaining it doesn't work well.=20

Perhaps those doing this could listed recommended NICs so write performance o=
f the slave over the network isn't slow as sin, or their relevant part of th=
eir config scripts to get this running well, any sysctl's set to boost perfo=
rmance, gotcha's you e seen using this setup, and if a mirror failed were yo=
u happy with this. India during recovery? Anything that will help current an=
d future folks stumbling across this thread I think would be a big help in g=
etting this good idea used a little more widely.=20

Chris=



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