On Thu, 2014-01-09 at 08:35 +0100, squadra wrote: > Right, try multipathing with nfs :)
Yes, that´s what I meant, maybe could have been more clear about that, sorry. Multipathing (and the load-balancing it brings) is what really separates iSCSI from NFS. What I´d be interested in knowing is at what breaking-point, not having multipathing becomes an issue. I mean, we might not have such a big VM-park, about 300-400 VMs. But so far running without multipathing using good ole' NFS and no performance issues this far. Would be good to know beforehand if we´re headed for a wall of some sorts, and about "when" we´ll hit it... /K > > On Jan 9, 2014 8:30 AM, "Karli Sjöberg" <karli.sjob...@slu.se> wrote: > On Thu, 2014-01-09 at 07:10 +0000, Markus Stockhausen wrote: > > > Von: users-boun...@ovirt.org [users-boun...@ovirt.org]" im > Auftrag von "squadra [squa...@gmail.com] > > > Gesendet: Mittwoch, 8. Januar 2014 17:15 > > > An: users@ovirt.org > > > Betreff: Re: [Users] Experience with low cost NFS-Storage > as VM-Storage? > > > > > > better go for iscsi or something else... i whould avoid > nfs for vm hosting > > > Freebsd10 delivers kernel iscsitarget now, which works > great so far. or go with omnios to get comstar iscsi, which is > a rocksolid solution > > > > > > Cheers, > > > > > > Juergen > > > > That is usually a matter of taste and the available > environment. > > The minimal differences in performance usually only show up > > if you drive the storage to its limits. I guess you could > help Sven > > better if you had some hard facts why to favour ISCSI. > > > > Best regards. > > > > Markus > > Only technical difference I can think of is the iSCSI-level > load-balancing. With NFS you set up the network with LACP and > let that > load-balance for you (and you should probably do that with > iSCSI as well > but you don´t strictly have to). I think it has to do with a > chance of > trying to go beyond the capacity of 1 network interface at the > same > time, from one Host (higher bandwidth) that makes people try > iSCSI > instead of plain NFS. I have tried that but was never able to > achieve > that effect, so in our situation, there´s no difference. In > comparing > them both in benchmarks, there was no performance difference > at all, at > least for our storage systems that are based on FreeBSD. > > /K _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
