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Hi - Our DPM head node services (albeit the "Golden Release"!) are currently running on an old SL4 32 bit machine, and I would like to move them to an SL5 64 bit machine. I am confident that I can configure the new machine to be a head node, but I don't know what to do about the fact that the new head node will, unavoidably, have a new IP address and hostname. My first question is will this have an effect on exiting data in existing pool nodes? The DPM mysql server is already hosted on a separate machine, which is not changing. Secondly, the existing head node has some old RAIDs hanging directly off it, so I would like to convert it into a normal pool node. How should this be done? My plan so far consists of 1) draining the RAIDS onto an existing pool node 2) installing the new head node 3) configuring the old head node to be a pool node 4) drain the files back. Are there any obvious pitfalls here? Finally, what are the implications for changing the SE name from ATLAS' point of view? Presumeably the ToA will have to change? Who would have to know about this? Cheers, Chris -- West 326 Physics and Astronomy University of Birmingham Edgbaston Birmingham B15 2TT (Office) 0121 414 4700 (Mobile) 0798 666 1959