I'll run a testbed environment made with 3 or 5 DELL R515 servers (12 disks each). I have no 10gb ethernet but only multiple LACP (2 or 4 gigabit nic) I'll have two different networks, one for sync, one for client access. In this case, i think that smaller disks are better, because in case of failure of a single osd/disk the sync time will be less than a bigger disk. For example 12 500GB disks instead 12 3TB disks (the space is not an issue, actually) -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html