Create Asm diskgroups using ASMCA

Check the disks on both nodes node1 and node2 using the below command : 

[root@node1 ~]# oracleasm listdisks

DATA

FRA

OCR_VOTE

[root@node2 ~]# oracleasm listdisks

DATA

FRA

OCR_VOTE

Now login to grid user on node1 or node2 and run the command .

[grid@node1] asmca

click on create -->

Disk Group Name       : DATA
Redundancy                :External
Select Member Disks: Eligible
Select the disk path : /dev/oracleasm/disks/DATA and click OK

click on create -->

Disk Group Name       : FRA
Redundancy                :External
Select Member Disks: Eligible
Select the disk path : /dev/oracleasm/disks/FRA and click OK

SQL> select name,total_mb/1024 "total_gb" , free_mb/1024 "free_gb" from v$asm_diskgroup;

NAME total_gb                 free_gb
-------------------------------------------------------------------
OCR_VOTE         5.77539063        5.48535156
FRA          3.1015625         2.77832031
DATA          6.19628906       2.50585938

SQL> select MOUNT_STATUS,HEADER_STATUS,MODE_STATUS,OS_MB,TOTAL_MB,FREE_MB, NAME from v$asm_disk ;

MOUNT_S    HEADER_STATU  MODE_ST  OS_MB   TOTAL_MB    FREE_MB NAME
------- ------------ ------- -------- ---------- ---------- ---------- ------------------------------ ----------------------
CACHED MEMBER         ONLINE        3176       3176                2845      FRA_0000  
CACHED MEMBER         ONLINE         6345       6345                 2556      DATA_0000
CACHED MEMBER         ONLINE          5914       5914                  5617  OCR_VOTE_0000  

SQL>