The configuration is stored on the MD array itself. The only thing that is stored on the server is the IP addresses of the SAN, so it knows where to find it. So you can just downloaded the latest MD Resource DVD for your SAN, install it on the new server, let it auto discover the array and confirm you can see everything. Once you feel comfortable that it looks fine, you can retire the other server (uninstall MDSM or just format the old server).
We are decommissioning an old server hosting the Modular Disk Storage Manager software and wondering if there is a procedure to move it to another host.  Is there a way to copy/export the configuration and import it to the new host?
Modular Disk Storage Manager