One of the ways we use clustering is to allow us to patch a box without extended downtime. I.e., to patch server A (1) relocate services on A to B (encountering a small downtime), (2) patch/test A with no time pressure, then (3) relocate the services back to A. Does anybody do the same or have comments on this patching technique? We are now beginning to virtualize and using this method in a virtualized environment seems awkward at best. It is OK for the dom0. The services are domUs so the relocation step is relocating them. However, if we run clustering for the domUs we end up running clustering on top of clustering. Is that reasonable? I can see one pitfall in that if you aren't careful you could have a clustered domU pair running on the same dom0. Mark -- Mark Wagner <markwag@xxxxxxxxxxxxxxxx> System Administrator, UW Medicine IT Services 206-616-6119 -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster