Question

What precaution to be taken while adding disks to asm diskgroup?

Answer 1

1) Check Permissions on raw devices

              $ ls -ltr /dev/raw/raw*

2) Disk String Parameter are set dynamically

 asm_diskstring='/dev/raw/raw1','/dev/raw/raw2','/dev/raw/raw3','/dev/raw/raw4',/dev/raw5','/dev/raw6'

3) ASM using spfile (But not pfile )

4) Candidate Disks are recognized before adding to ASM Diskgroup.