Keeping track of ASM disks

Oracle ASM on Solaris — How to avoid losing track of ASM disks.  We don't bring our Oracle ASM disks into a Veritas shared disk group, we just create symlinks (with friendly, human-readable names) on each node pointing to the raw disk device files, then add the symlinks to ASM.  Now, we are planning an EMC storage frame change, and all the raw disk device files will change.  We plan to carefully recreate the symlinks to point to the new disks, using a text file that maps the new EMC serial numbers to the old serial numbers.  No problem, but what