> ------------ Původní zpráva ------------ > Od: Craig Dunwoody <cdunwo...@graphstream.com> > Předmět: [ceph-devel] Hardware-config suggestions for HDD-based OSD node? > Datum: 29.3.2010 00:37:56
> As number of attached HDDs increases, I would expect to hit a number of > hardware and software resource limitations in the node. Certainly the > achievable sustained throughput of the lowest-level hardware interfaces > would be only a fraction of the aggregate-peak numbers that I listed > above. As to the number of disks, Sun Fire X4500 with 48 SATA disks showed real-world performance around 800-1000 MB/s (benchmarks on the web - iSCSI, no Ceph). Since it is a amd64 based I guess you can get similar I/O rates from any Intel box on the market today, provided you have enough SATA ports and/or PCI-E slots. One 10gbps NIC should be enough (these are usually two ported anyway). I would say the Linux will not be the bottleneck here even if you use software RAID. Usually it is the network or the protocol that limit the performance. Regards Aleš Bláha ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Ceph-devel mailing list Ceph-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ceph-devel
