Peter, I should be able to get round to testing this today. Great stuff. Let me know how you get on and I will try to help if necessary / possible. Just currently moving the system disk on the alpha from ODS-5 to OSD-2 so that we've got half a chance of clustering the VAX properly... I don't think the alpha system disk being ODS-5 should cause any problems clustering with a VAX. However, you would not be able to mount the ODS-5 disk from the VAX side of the cluster and from that point of view, it would be better if it was ODS-2. Regards, Peter Coghlan.