Server Administration :: Switch Between Disks In A Diskgroup?

I have an Oracle database 11.1.0.6 with ASM storage.

SQL> select * from v$version;
BANNER
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Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - 64bit Production
PL/SQL Release 11.1.0.6.0 - Production
CORE 11.1.0.6.0 Production
TNS for Solaris: Version 11.1.0.6.0 - Production
NLSRTL Version 11.1.0.6.0 - Production

There is a disk group named +FRA which has only 1 disk (call it disk 0 for later references).

+FRA disk group is in type of EXTERNAL redundancy

I'd like to add another disk to +FRA disk group and copy all files stored in disk 0 to the new disk (call it disk 1 for ex.), then take off disk 0 (not use for +FRA disk group any more).

Expected result: there is only one disk 1 left in the +FRA disk group, with all the data from disk 0 and keep their original file names