On Fri, Sep 11, 2009 at 6:41 AM, Andy Knight <Andy.Knight at ivcapital.com> wrote: > glusterfs 2.0.6, fuse-2.7.4-1.el5.rf, hosts are all running CentOS 5.2, > local networks for NFS is gbe, link between uk1 and us1 is tcp 100mb > internet, and disks are all SATA Your nodes are separated by a transatlantic link? What's the RTT for pinging between the hosts? Gluster over WAN doesn't seem to work very well in our experience (East Coast/West Coast USA).