Hi James, It all depends on what you are looking to accomplish and what hardware you are comparing.
Newer Infiniband QDR cards are rated at 40 Gbit/s which are a bit quicker than the 10GbE alternative. Today, IPoIB provides great performance, but would be better with native RDMA support. 10GbE is a great solution, but you really miss out on low latency high bandwidth capabilities that Infiniband brings to the table. Right now, IPoIB is the best solution with DRBD if you want to exceed current 10GbE benchmarks. We have a tech guide that will be announced this week, but since you asked so kindly, please check this out at your leisure: http://www.linbit.com/en/education/tech-guides/infiniband-and-drbd-technical-guide/ Also...stay tuned... :) In regards to how DRBD is going to support this in the future: LINBIT is working to develop native RDMA support for Infiniband (this will make DRBD on Infiniband much much quicker), but we still need assistance from the community to make this feature-set possible. HA and DRBD experts. We could always use the help! - [email protected] if you would like to assist in developing or sponsoring this feature for the DRBD Community. Don't just claim you're an expert, show it! :) Best, -Kavan On 04/30/2012 04:11 AM, James Harper wrote: > I'm considering configurations for a pair of new servers - a 2 node Xen > cluster with shared storage. > > It looks like I can build a HP server with direct connected 10gbe or ib for > approximately the same price. Given the choice, what is the preference these > days? The link will be dedicated to DRBD so other communications over the > link are unimportant. > > And are the HP ib cards well supported under Linux? Anecdotal reports > appreciated! > > Thanks > > James > _______________________________________________ > drbd-user mailing list > [email protected] > http://lists.linbit.com/mailman/listinfo/drbd-user -- : Kavan Smith : LINBIT | "Your Way to High Availability" : 1-503-573-1262 x201 | 1-877-4-LINBIT : Web: http://www.linbit.com : : Twitter: http://www.linbit.com/en/twitter : Facebook: http://www.linbit.com/en/facebook _______________________________________________ drbd-user mailing list [email protected] http://lists.linbit.com/mailman/listinfo/drbd-user
