IMHO, exadata cell in oracle rac is very different beast, not sure your iozone test make any sense
Sent from my iPad Hung-Sheng Tsao ( LaoTsao) Ph.D On May 28, 2011, at 2:07 PM, Gary <gdri...@gmail.com> wrote: > On 5/27/11, Dan Swartzendruber wrote: >> It all depends, I guess. Some people get better performance with iSCSI, >> others with NFS. The big advantage of going NFS is that the OI server >> can back up user data by snapshotting the zfs filesystem on the OI >> server (this is not the only kind of backup you want, of course...) > > This is largely dependent on your infrastructure, file sizes, usage > patterns, applications, etc. At the office I'm in the middle of an > extensive comparison benchmarking analysis using iozone and the Excel > spreadsheet that I gladly bought from the author (I'll try the free > gnuplot scripts eventually). The presentation is slightly different > under LibreOffice but the data is still the same and I'd be glad to > post my files on DropBox for others to peruse if there's any interest. > Here's what I'm testing with... > > Cisco: > Nexus series (can't recall which) > > NetApp: > ONTAP 8.0.1 p2 - soon to be p3 with 10G ethernet ports > > VMware: > Linux (CentOS) and Solaris x86 under VMware > (10G backend from the cluster to storage but the virtual devices > limit it to 1G) > > Solaris: > Solaris 10 on M5000 with 10G > (have to check which sol update it's using but it was fully patched > on our last quarterly cycle) > > Exadata X2-2: > (40G Infiniband to cell storage in the rack) > > > I started on the Linux side with VMware hosts and so far I've tested > iSCSI single disk and mirrored volumes using soft RAID and LVM2 under > CentOS. I also tested NFSv3 and ran one test on the Exadata cell > storage. But I plan on moving to Solaris and Linux variants of NFSv4, > Oracle DirectNFS, and possibly some 8G fibre channel LUNs as well. > Eventually, I'd like to throw in a recent release of OI but it may > have to be run under VMware unless I can find some spare hardware or > the SPARC release comes out by then. Also, each of my tests take about > a half a day to run because I'm scaling all the way up to 16G file > sizes. I'm using non-prod infrastructure so I can start most of them > during the day but even our dev Exadata nodes are starting to get some > use during business hours that necessitates running in the evenings > and weekends. > > -Gary > > _______________________________________________ > OpenIndiana-discuss mailing list > OpenIndiana-discuss@openindiana.org > http://openindiana.org/mailman/listinfo/openindiana-discuss _______________________________________________ OpenIndiana-discuss mailing list OpenIndiana-discuss@openindiana.org http://openindiana.org/mailman/listinfo/openindiana-discuss
