Drop an ASM disk that contains a Voting Disk
1. Check the location of voting disk.
crsctl query css votedisk
## STATE File Universal Id File Name Disk group -- ------ -------------------------------- ---------------- ----------- 1. ONLINE 48d3710843274f88bf1eb9b3b5129a7d (ORCL:ASMDISK01) [DATA] 2. ONLINE 354cfa8376364fd2bfaa1921534fe23b (ORCL:ASMDISK02) [DATA] 3. ONLINE 762ad94a98554fdcbf4ba5130ac0384c (ORCL:ASMDISK03) [DATA]
2. Connect with ASM instance.
sqlplus / as sysdba
select name,group_number from v$asm_diskgroup;
select name from v$asm_disk where group_number=1;
3. Drop the disk allocated to voting disk.
alter diskgroup data drop disk 'ASMDISK01';
alter diskgroup data drop disk 'ASMDISK02';
4. Check again only one disk left.
select name from v$asm_disk where group_number=1;
5. Create new disk group by external redundancy.
CREATE DISKGROUP FRA External REDUNDANCY DISK '/devices/diska1' NAME ASMDISK01;
6. Replace votedisk to +FRA.
crsctl replace votedisk +FRA;
7. check the status of votedisk.
crsctl query css votedisk
8. Either drop the last asmdisk03 left or add asmdisk02 into data group.
alter diskgroup data drop disk 'ASMDISK03';
alter diskgroup data add disk 'ASMDISK02';
9. Use this diskgroup as data diskgroup.
