Onece you have disk group and diskgroup contain meta it is double stripping. because AMS spread IO on storage pool.  Hard to explain everything, can you refer following documnet. [URL]
good day,  could anyone please let me know, how to know if the devices that are used for ASM Oracle on AIX 6.1 on DMX4, is using double striping or not? also, is it recommented to reserve the physical Disk on DMX to ASM devices?
double stiping for ASM Oracle.