2013/4/18 Mark Nelson <mark.nelson@xxxxxxxxxxx>: > 10GbE is fully supported and widely used with Ceph while IB is a bit more > complicated with fewer users. Having said that, IPoIB seems to work just > fine, and there is potential in the future for even better performance. > Which one is right for you probably depends on the existing network > infrastructure you are using, how fast your OSD nodes are, and what you are > trying to do. Sadly there is no easy answer. :) QDR switches are sold (refurbished) at more or less € 2k, 40Gb/s and usually 36ports. 10GbE costs at least 2x times more and with only 12 or 24 ports. 2GB/s on QDR cards is good and is still faster than 10GbE but still half than what I would expect from a QDR card. Do you know why we loose more than 50% of bandwidth? Do you have experience on DDR cards? _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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