bash-4.2# su - grid
$ bash
bash-4.2$ asmcmd
ASMCMD> lsdg
State    Type    Rebal  Sector  Logical_Sector  Block       AU  Total_MB  Free_MB  Req_mir_free_MB  Usable_file_MB  Offline_disks  Voting_files  Name
MOUNTED  NORMAL  N         512             512   4096  4194304   2097152  2096856                0         1048428              0             N  ARCH/
MOUNTED  NORMAL  N         512             512   4096  4194304   8388608  2796284          1048576          873854              0             N  DATA/
MOUNTED  NORMAL  N         512             512   4096  4194304     30720    29732            10240            9746              0             Y  OCR/

Q.E.D.