There are quite a few options for PPME. It is not a Symmetrix only tool and there is a host copy option so you don't have to use array based replication. The host copy option enables powerpath to perform the mirror of the data from the source lun to the target lun (with the target masked to the host simultaneously). Once the mirror is synchronized you simply use a cli switch to change from the source to the target lun, then unmask the old lun.  Have you looked at the release notes for your OS yet?
we are introducing a new clariion and we will move the luns belonging to each host from the old clariion to the new clariion. each host luns will be moved over a period of one per month.  what suggestions are there to move the data from the current lun to the new lun? I can use disk and file copy utilities but are there any EMC applications that will manage the data migration for me?  thanks
clariion migration