Diskgroup addition 11gR2 Rac on Windows

Adding  Disk group on 2 - Node 11gr2 RAC on Windows

-->Control Panel\All Control Panel Items\Administrative Tools -->Computer Management --> Disk Management

Create a partition with required size from the Free Space.

In My setup Disk 1 is the shared storage between the Nodes. From the available 7.5 GB am going add one partition with 2GB of Size.

Dont assign drive letter.

.

Do not Format the Volume.

Refresh the Disk Management in other Node, So that the same will appear there too. In case if it has got some default drive letter in other Node, remove the drive letter.

Once the partitions are completed, I used the ASMTOOLG.EXE utility to stamp each partition with an ASM label so that Oracle can recognize these partitions as candidate disks for the ASM instance. I executed the ASMTOOLG.EXE program.

This step is mandatory, otherwise asmca utility will not identify your asmdisk.

When we add label, we could find the candidate device with 2GB of size as we created. Select the same disk and then We can add the prefix as our wish.

Once it is done Use asmca to create diskgroup using those disks.  --> Create Diskgroup

It will display the disk, which we have created. Since we have only one disk, I have used external redundancy.

Check the same in other node. Check whether the diskgroup mounted or not.

Its Done.

Issues Faced,

While trying to stamp asm header, found below error,

Error from Node 2. When I check the status of the diskgroup, it was unmounted. logged in to +ASM2 instance and then mounted those diskgroups,

>alter diskgroup dd2 mount;

Everything worked fine.