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.vanLeeuwen@xxxxxxxxxxxxx> 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
Zeeshan Ali Shah
System Administrator - PDC HPC
PhD researcher (IT security)
Kungliga Tekniska Hogskolan
+46 8 790 9115
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