You will need CPUs as well if you want to push/fetch 200Gbps 2603 is really too short (not really an issue, but NVMe for OS seems useless to me) On 05/07/2017 11:02, Wido den Hollander wrote: > >> Op 5 juli 2017 om 10:54 schreef Massimiliano Cuttini <max@xxxxxxxxxxxxx>: >> >> >> Dear all, >> >> luminous is coming and sooner we should be allowed to avoid double writing. >> This means use 100% of the speed of SSD and NVMe. >> Cluster made all of SSD and NVMe will not be penalized and start to make >> sense. >> >> Looking forward I'm building the next pool of storage which we'll setup >> on next term. >> We are taking in consideration a pool of 4 with the following single >> node configuration: >> >> * 2x E5-2603 v4 - 6 cores - 1.70GHz > > You will need a faster CPU to get the maximum out of your OSDs. > > IOps inside a OSD are single threaded, so if you want low-latency for a single I/O you will need a faster CPU. Something like a 3Ghz CPU. > > For example the E5-2643 v4 6core, 3.7Ghz > >> * 2x 32Gb of RAM >> * 2x NVMe M2 for OS >> * 6x NVMe U2 for OSD >> * 2x 100Gib ethernet cards >> >> We have yet not sure about which Intel and how much RAM we should put on >> it to avoid CPU bottleneck. >> Can you help me to choose the right couple of CPU? >> Did you see any issue on the configuration proposed? >> >> >> Thanks, >> Max >> >> _______________________________________________ >> ceph-users mailing list >> ceph-users@xxxxxxxxxxxxxx >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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