Date: Fri, 9 Jan 2009 01:13:24 -0500 From: Gary Palmer <gpalmer@freebsd.org> To: Andrew Snow <andrew@modulus.org> Cc: freebsd-scsi@freebsd.org Subject: Re: ISCSI and multipath Message-ID: <20090109061324.GD81380@in-addr.com> In-Reply-To: <4966A25E.4070803@modulus.org> References: <496634BB.9050902@dotcom.ts.it> <4966A25E.4070803@modulus.org>
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On Fri, Jan 09, 2009 at 12:03:26PM +1100, Andrew Snow wrote: > Sossi Andrej wrote: > >Another question about MD3000i. > >My MD3000i have 2 controller and every controller have 2 net interface. > >My FreeBSD server is connect on NAS server with 2 network cards throw > >out 2 switch on th 2 networks. (192.168.253.X and 192.168.252.X). > >In the official manual is written if the primary controller (or net) > >have a problem the NAS automatically switch disks drive on second > >controller. For this is required MPIO on Windows or MPP on Linux. It is > >supported also on FreeBSD? > > If you only wanted to do failover at the network level with shared IP > address, you could use lagg. > > However, since you have different IP subnets for each network, you > probably want to look at using geom_fox. You set up two iSCSI > connections, one to each controller, and geom_fox on top to make it > appear as a single disk device. FreeBSD 7.0 and later also has geom_multipath, which I've been told (no experience) is a better approach. I suggest you review documentation for both and make your own decision Regards, Gary
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