How to add a new diskgroup to existing ASM diskgroup in 11gR2

Here I am going to show you how to add new disks( or extra space/storage) to the existing ASM diskgroups.

Given:

Unix SA has provided/presented the new raw devices with the same size as the existing disks in our ASM disk group.


here my asm discovery path or the location where the new disks have been presented is
"/dev/oracle/"

given/need to add the six new disks:

crw------- 1 oracle oinstall 302, 42061 Dec 8 14:59 disk64g_t1_0028
crw------- 1 oracle oinstall 302, 42062 Dec 8 14:59 disk64g_t1_0029
crw------- 1 oracle oinstall 302, 42063 Dec 8 14:59 disk64g_t1_0030
crw------- 1 oracle oinstall 302, 42064 Dec 8 14:59 disk64g_t1_0031
crw------- 1 oracle oinstall 302, 42065 Dec 8 14:59 disk64g_t1_0032
crw------- 1 oracle oinstall 302, 42066 Dec 8 14:59 disk64g_t1_0033

current disk group info:

ASM Diskgroup information ..


DiskGroup Name       %Used TOTAL_MB      FREE_MB
-------------------- ----- ------------ ------------
ICMQA_DATA_01         95    1,768,532     85,547

To the above disk group we are going to add new disks.


Invoke asmca after setting the X11 and display settings.


my unix host(+ASM1) /export/home/oracle
>asmca


then follow the screen shots.




now click on disk groups.



right click on the disk group where you want to add new disks to.




click on add disks.




now select the disks that you want to add to and click ok.





disks have added now.

After adding the disks.





ASM Diskgroup information ..


DiskGroup Name  %Used  TOTAL_MB   FREE_MB
--------------- ----- ---------- ---------
ICMQA_DATA_01    78    2,161,538  478,541