So is there any other alternative for over the WAN deployment .. I hava use case to connect two Swedish unversities (few hundreds km apart) .
Target is that user from univ A can write to cluster to univ B and can read the data from other users . /Zee On Tue, Jan 13, 2015 at 7:41 AM, Robert van Leeuwen < robert.vanleeu...@spilgames.com> wrote: > >> 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. > > Indeed. > Ceph is not aware of WAN links. > So reads and writes will be done remotely even if there is a copy locally. > Bandwidth might not be much of an issue but latency certainly will be. > Although bandwidth during a rebalance of data might also be problematic... > > Cheers, > Robert van Leeuwen -- 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
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