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Sometimes  as DBAs may need to recreate ASM Diskgroup on their environments. I face with one issue on our disaster test. Our ORADATA diskgroup sync with Disaster center but ORAFRA diskgroup do not copy to disaster center.
Normally If you have disk on disaster center(In our case diskgroup is ORAFRA) you can select a different name for the diskgroup or drop diskgroup and recreate the raw devices.Recreate the raw devices is required in order to remove completely the ASM metadata.

In my case, Storage team give me one new raw device at disaster center and I need to recreate ORAFRA at disaster center.

You can follow below steps to recreate ASM Diskgroup for 10g&11g.

Steps are different for 10g&11g.So Here is the steps for 11g:

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