On Tue, Mar 22, 2016 at 2:37 PM, Ben Archuleta <barchu02@xxxxxxx> wrote: > Hello All, > > I have experience using Lustre but I am new to the Ceph world, I have some questions to the Ceph users out there. > > I am thinking about deploying a Ceph storage cluster that lives in multiple location "Building A" and "Building B”, this cluster will be comprised of two dell servers with 10TB (5 * 2TB Disks) of JBOD storage and a MDS server over a 10GB network. We will be using CephFS to serve multiple operating systems (Windows, Linux, OS X). A two node Ceph cluster is rarely wise. If one of your servers goes down, you're going to be down to a single copy of the data (unless you've got a whopping 4 replicas to begin with), and so you'd be ill advised to write anything to the cluster while it's in a degraded state. If you've only got one MDS server, your system is going to have a single point of failure anyway. You should probably look again at what levels of resilience and availability you're trying to achieve here and think about whether what you really want might be two NFS servers backing up to each other. > My main question is how well does CephFS work in a multi-operating system environment and how well does it support NFS/CIFS? Exporting CephFS over NFS works (either kernel NFS or nfs-ganesha), beyond that CephFS doesn't care too much. The Samba integration is less advanced and less tested. Bug reports are welcome if you try it out. > What are the chances of data corruption. There's no simple answer to a question like that. It's highly unlikely to eat your data on a properly configured cluster. > Also on average how well does CephFS handle variable size files ranging from really small to really large? Large files just get striped into smaller objects (4MB by default). Small files have a higher metadata overhead per data, as in any system. Cheers, John _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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