I'm interested to know if there is a reference to this reference architecture. It would help alleviate some of the fears we have about scaling this thing to a massive scale (10,000's OSDs).
Thanks, Robert LeBlanc On Thu, Dec 18, 2014 at 3:43 PM, Craig Lewis <cle...@centraldesktop.com> wrote: > > > > On Thu, Dec 18, 2014 at 5:16 AM, Patrick McGarry <patr...@inktank.com> > wrote: >> >> >> > 2. What should be the minimum hardware requirement of the server (CPU, >> > Memory, NIC etc) >> >> There is no real "minimum" to run Ceph, it's all about what your >> workload will look like and what kind of performance you need. We have >> seen Ceph run on Raspberry Pis. > > > Technically, the smallest cluster is a single node with a 10 GiB disk. > Anything smaller won't work. > > That said, Ceph was envisioned to run on large clusters. IIRC, the > reference architecture has 7 rows, each row having 10 racks, all full. > > Those of us running small clusters (less than 10 nodes) are noticing that > it doesn't work quite as well. We have to significantly scale back the > amount of backfilling and recovery that is allowed. I try to keep all > backfill/recovery operations touching less than 20% of my OSDs. In the > reference architecture, it could lose a whole row, and still keep under > that limit. My 5 nodes cluster is noticeably better better than the 3 node > cluster. It's faster, has lower latency, and latency doesn't increase as > much during recovery operations. > > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > >
_______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
