The Oracle Grid 11.2.0.4 installation appears "ins-30510:insufficient number of ASM disks selected."

The reason for the error is because the number of disks and the redundancy hierarchy do not match:

If you create an ASM disk group to hold OCR and Votedisk, then the number of Failgroup for external, Normal, and high three redundancy levels is 1, 3, 5. That is, the disk groups that create these three redundancy levels require at least 1, 3, 5 ASM disks, respectively.

If you create an ASM disk group for non-OCR and Votedisk storage, then the failgroup of external, Normal, and high three redundancy levels corresponds to at least 1, 2, 3. That is, the disk groups that create these three redundancy levels require at least 1, 2, 3 ASM disks, respectively.

If you do not follow the rules for creating ASM disk groups, you will receive the following error message:

ins-30510: Insufficient number of ASM disks selected.