Date: Mon, 5 Sep 2016 17:23:22 +0200 From: Julien Cigar <julien@perdition.city> 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: <20160905152322.GA1779@mordor.lan> In-Reply-To: <e0445cf02579fa338e6ff63fa93f54b3@mail.zplay.eu> References: <e0445cf02579fa338e6ff63fa93f54b3@mail.zplay.eu>
index | next in thread | previous in thread | raw e-mail
[-- Attachment #1 --] On Mon, Sep 05, 2016 at 04:56:49PM +0200, Solène Rapenne wrote: > Hello, > > 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. > > 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 > > > 1st option : MASTER Web connects to both iSCSI server and make > a raid1 of the iSCSI > > pros : in case of failure of iSCSI 1 or 2, Web isn't affected > cons : slow ? network bottleneck ? > > +---------+ CARP +---------+ > | Web1 | <----> | Web2 | > +---------+ +---------+ > |raid1\ > | \__________ > | \ > +---------+ +---------+ > | iSCSI 1 | | iSCSI 2 | > +---------+ +---------+ > > > 2nd option : MASTER Web connects to MASTER iSCSI server, > which replicates to slave iSCSI server with HAST > > pros : no idea > cons : if we want to switch the iSCSI server we have to stop everything > > +---------+ CARP +---------+ > | Web1 | <-----> | Web2 | > +---------+ +---------+ > | > | > +---------+ CARP + +---------+ > | iSCSI 1 | HAST | iSCSI 2 | > +---------+ <----> +---------+ > there was a recent discussion on @freebsd-fs that may interrest you, check the whole discussion on: http://marc.info/?t=146729917100015&r=4&w=2 > > 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" -- Julien Cigar Belgian Biodiversity Platform (http://www.biodiversity.be) PGP fingerprint: EEF9 F697 4B68 D275 7B11 6A25 B2BB 3710 A204 23C0 No trees were killed in the creation of this message. However, many electrons were terribly inconvenienced. [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAABCgAGBQJXzY3qAAoJELK7NxCiBCPAhAIP/3TavSF7My7oGFppEDRljOib nG/Ylacu/byxlDE2RIyrOhmF03J2UeGdkJlmpqUwjOO9evW26krf/0qyJe2VXD4Q nR1RxEnP7D0U8TbjPQcdgH9CjlVM7jsCbPUdLR83HmLRgwY9nXoRWaKjiduQxbwk 332C3Was6i2cknXQipk3RGNIhBpC8YW/rSzVoJapJuC5QXp7JcNP7cb+nO6qNfq2 w8y7NflVRKtouaDZyZB9cFpKBd+/8Le9un6T78drwicIyFdqp4yX9i20c/sXLBw2 dyD1jGiUjNqXMdLqgNfDPbi1ipxnpFhHB/bn7xZ7YYURvxnhEkVICpIgMpjNRzbS GCpuB9wXImJ6GoOt4ox65phhkdHMyWUo8VT5g0eqj0nUpI9SwlZJwFDKJspd4G9d YGUhEsiimkvUEdUAbuKTPbCKuqCMK6djnJDRAWsvUxRU5kcuvmrEmzUNDzM4WBhd XAska1yMmw30feZGS8LhGi++JT1yokUCg2l5PAwLcOYUBaLA7AZ40D0Jgil4bgEI FogWiOCOvDpJisps0jROm7/qDN9qagQe/DBS7Ho3WClbl1fFf9iHfh4B+WbeniYP I8j+V6rZkepOpwC2Gz9HTsbOnU5+5sH8usEWe/lc3T2FSaX6xPNG2Cuo/EjFQg7A Gy9sV2zL1KNPplw5k64Q =lVvn -----END PGP SIGNATURE-----help
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20160905152322.GA1779>