Use "lsdg" to examine the disk groups.
Use the "ls" command to list the ASM directory structure
"cd" command to change to the AWORLD directory
"du" command to evaluate size of the disk group directory
"lsct" command to see software versions.
"lsct -g" to examine the client’s use of diskgroups
"lsdsk" shows the disks that are managed by ASM
"iostat" to see the Reads and Writes
---Oracle : ASM ---