Date: Mon, 5 Sep 2016 11:10:14 -0400 From: Chris Kiakas <chris@lrckinfo.com> To: =?utf-8?Q?Sol=C3=A8ne_Rapenne?= <solene@perso.pw> Cc: freebsd-questions@freebsd.org Subject: Re: High availability storage : raid1 of iSCSI or iSCSI + hast Message-ID: <2D88912C-2A75-4ED6-BE14-563064250D21@lrckinfo.com> In-Reply-To: <e0445cf02579fa338e6ff63fa93f54b3@mail.zplay.eu> References: <e0445cf02579fa338e6ff63fa93f54b3@mail.zplay.eu>
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--Apple-Mail=_77021448-AEF2-47FF-A079-84627993E04E Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=utf-8 Just a note on option 1. It does not need to be slow. You can get 10gb connection NIC or = Multilink (laggy/lacp) several NICs together. Make sure your switch = supports it. Chris chris@lrckinfo.com --------------------------------------------------------------- 514.884.8185 320, rue de la Fenaison Varennes, Qu=C3=A9bec, J3X 2H2 --------------------------------------------------------------- http://www.lrckinfo.com > On Sep 5, 2016, at 10:56 AM, Sol=C3=A8ne Rapenne <solene@perso.pw> = wrote: >=20 > Hello, >=20 > I am building a high availability cluster with FreeBSD, to make it = simple, we have 2 master/slave server called Web1 and Web2 and 2 = master/slave file server called iSCSI1 and iSCSI2. >=20 > I have been thinking about 2 options and I would like to have some = feedback if you run one of the option (or something else) : > - the first is to create a raid1 of both iSCSI target and mount it = on the webserver who is the master. > - the second is mounting the iSCSI target from the master iSCSI = server and the master iSCSI server will replicates the data to the slave >=20 >=20 > 1st option : MASTER Web connects to both iSCSI server and make > a raid1 of the iSCSI >=20 > pros : in case of failure of iSCSI 1 or 2, Web isn't affected > cons : slow ? network bottleneck ? >=20 > +---------+ CARP +---------+ > | Web1 | <----> | Web2 | > +---------+ +---------+ > |raid1\ > | \__________ > | \ > +---------+ +---------+ > | iSCSI 1 | | iSCSI 2 | > +---------+ +---------+ >=20 >=20 > 2nd option : MASTER Web connects to MASTER iSCSI server, > which replicates to slave iSCSI server with HAST >=20 > pros : no idea > cons : if we want to switch the iSCSI server we have to stop = everything >=20 > +---------+ CARP +---------+ > | Web1 | <-----> | Web2 | > +---------+ +---------+ > | > | > +---------+ CARP + +---------+ > | iSCSI 1 | HAST | iSCSI 2 | > +---------+ <----> +---------+ >=20 >=20 > Thank you for reading > _______________________________________________ > freebsd-questions@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to = "freebsd-questions-unsubscribe@freebsd.org" --Apple-Mail=_77021448-AEF2-47FF-A079-84627993E04E Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc Content-Type: application/pgp-signature; name=signature.asc Content-Description: Message signed with OpenPGP using GPGMail -----BEGIN PGP SIGNATURE----- Comment: GPGTools - https://gpgtools.org iQIcBAEBCgAGBQJXzYrXAAoJEJd//Oz/ACy7Fw8P/2lZ1MtoC/nvjrVHzmeMq82N l6la8jRmsTCzxmFtx8n0XL/qjxLyvy0fWH/jnLSdjdXIKJm7Rw7IhCpc5xaINrUm 2DWRZPoJf8A6JyqRh3f7ES3xBgRdU+FRBt5Hob3W8d//tcA+bKNdkXU6BzhRL8m+ Z1RAFiZ9hWUCMdvDG9qYDnF/Eb/yasXZaq7on2+e3WJxFNBWqSiw1ptwm5r7GrWv qkcAU6xMtreamoWPAHLTk//PrGrZrkEA1xGDU5jajFIkoAhGC2cawRSZmcBnetDo +2By16SBSJND6YkZdcVvi6nTBSv2R9ZpfqZc1M2dAKH0ECLNC9NmPM6rSiRJz9aA kJ3mGMNxgFrURGAuT7D5E06oOKB8FHS6zS/HdwWFdC7SuS47HPgz4Bt5sW/wHvjO p/TGMrbLNUTejhOr8QMzWhe7GoKytCy2oRtSDeCzVaHjwH3nxjJzmKueht/WcCZA j7EWHjfUh3aedfr/b5QljhdJmKUo7hCD8aMTohRuZaq41Le9phzwJ9zzeX4jw/ta 1pUahxsaHVsihuTXYTRQbk3jho8IxYiEYtDa1mDMaubL1A9ZW9sDWGYl9dsJ/p25 Ge9ldRqrecLvBSZ/5e28u8E0/zf3UmZQHBU2RCQb+oSHfIkm+/LY9NKy2WDpBaml Cdc9rFCKrTa/QJGJyPVT =UPGD -----END PGP SIGNATURE----- --Apple-Mail=_77021448-AEF2-47FF-A079-84627993E04E--
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