We need to fix an offset problem on our data LUNS on the SAN. The LUNS contain the user Databases and System Databases .MDF files and SSIS packages. Can I add the new LUNS to the cluster, shutdown SQL server, move the data to the new LUNS, rename the new LUNS to match the drive names of the old LUNS and bring up SQL without having to detach and re-attach the databases? Has anyone done this? We're running 64-bit SQL 2005 on an active/passive cluster.