On Mon, Jan 12, 2015 at 3:55 AM, Zeeshan Ali Shah <zas...@pdc.kth.se> wrote: > Thanks Greg, No i am more into large scale RADOS system not filesystem . > > however for geographic distributed datacentres specially when network > flactuate how to handle that as i read it seems CEPH need big pipe of > network
Ceph isn't really suited for WAN-style distribution. Some users have high-enough and consistent-enough bandwidth (with low enough latency) to do it, but otherwise you probably want to use Ceph within the data centers and layer something else on top of it. -Greg > > /Zee > > On Fri, Jan 9, 2015 at 7:15 PM, Gregory Farnum <g...@gregs42.com> wrote: >> >> On Thu, Jan 8, 2015 at 5:46 AM, Zeeshan Ali Shah <zas...@pdc.kth.se> >> wrote: >> > I just finished configuring ceph up to 100 TB with openstack ... Since >> > we >> > are also using Lustre in our HPC machines , just wondering what is the >> > bottle neck in ceph going on Peta Scale like Lustre . >> > >> > any idea ? or someone tried it >> >> If you're talking about people building a petabyte Ceph system, there >> are *many* who run clusters of that size. If you're talking about the >> Ceph filesystem as a replacement for Lustre at that scale, the concern >> is less about the raw amount of data and more about the resiliency of >> the current code base at that size...but if you want to try it out and >> tell us what problems you run into we will love you forever. ;) >> (The scalable file system use case is what actually spawned the Ceph >> project, so in theory there shouldn't be any serious scaling >> bottlenecks. In practice it will depend on what kind of metadata >> throughput you need because the multi-MDS stuff is improving but still >> less stable.) >> -Greg > > > > > -- > > Regards > > Zeeshan Ali Shah > System Administrator - PDC HPC > PhD researcher (IT security) > Kungliga Tekniska Hogskolan > +46 8 790 9115 > http://www.pdc.kth.se/members/zashah _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
