[ovirt-users] Best Storage Option: iSCSI/NFS/GlusterFS?

[Charles Tassell]

Hi Everyone,

   I'm about to setup an oVirt cluster with two hosts hitting a Linux 
storage server.  Since the Linux box can provide the storage in pretty 
much any form, I'm wondering which option is "best." Our primary focus 
is on reliability, with performance being a close second.  Since we will 
only be using a single storage server I was thinking NFS would probably 
beat out GlusterFS, and that NFSv4 would be a better choice than NFSv3.  
I had assumed that that iSCSI would be better performance wise, but from 
what I'm seeing online that might not be the case.

   Our servers will be using a 1G network backbone for regular traffic 
and a dedicated 10G backbone with LACP for redundancy and extra 
bandwidth for storage traffic if that makes a difference.

   I'll probably try to do some performance benchmarks with 2-3 options, 
but the reliability issue is a little harder to test for.  Has anyone 
had any particularly bad experiences with a particular storage option?  
We have been using iSCSI with a Dell MD3x00 SAN and have run into a 
bunch of issues with the multipath setup, but that won't be a problem 
with the new SAN since it's only got a single controller interface.