Hi All, On 28 May 2012, at 12:28, Jerker Nyberg wrote:
> > This may not really be a subject ceph-devel mailinglist but rather a > potential ceph-users? I hope it is ok to write here. I would like to discuss > the if it sounds reasonable to run a Ceph cluster distributed over a metro > (city) network. > > Let us assume we have a couple of sites distributed over a metro network with > at least gigabit interconnect. The demands for storage capacity and speed at > our sites are increasing together with the demands for reasonably stable > storage. May Ceph be a port of a solution? > > One idea is to set up Ceph distributed over this metro network. A public > service network is announced at all sites, anycasted from the storage > SMB/NFS/RGW(?)-to-Ceph gateway. (for stateless connections). Statefull > connections (iSCSI?) has to contact the individual storage gateways and > redundancy is handled at the application level (dual path). Ceph kernel > clients contact the storage servers directly. > > Hopefully this means that clients at the sites with a storage gateway will > contact it. Clients at a site without a local storage gateway, or when the > local gateway is down, will contact a storage gateway at another site. > > Hopefully not all power and network at the whole city will go down at once! > > Does this sound reasonable? It should be easy to scale up with more storage > nodes with Ceph. Or is it better to put all servers in the same server room? > > Internet > | | > Routers > | | > Metro network ============================= > | | | | | | > Sites R R R R R R > | | | | > Servers Ceph1 Ceph2 Ceph3 Ceph4 > > I'm also interested in this type of use case, I would be interested in running a ceph cluster across a metropolitan area network. Has anyone tried running ceph in a WAN/MAN environment across a city/state/country? Regards, Jimmy Tang -- Senior Software Engineer, Digital Repository of Ireland (DRI) Trinity Centre for High Performance Computing, Lloyd Building, Trinity College Dublin, Dublin 2, Ireland. http://www.tchpc.tcd.ie/ -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
