Home > Storage > PowerMax and VMAX > Storage Admin > Dell PowerMax: Data Mobility Best Practices and Operational Guide > Migrate a child-only SG
To migrate a child SG, you must first non-disruptively remove the child SG from the parent SG.
If there are multiple child SGs, select which one you would like to migrate and give a name to the masking view that will be created. Click Run Now.
Once the process is complete, the child storage group is split from the parent as a standalone storage group. For guidance on how to migrate the SG see Metro-based NDM Walkthrough Guide.
With Solutions Enabler, use the symsg library:
symsg -sg <SgName> -sid <SymmID>
merge <SgName1>
split <SgName1> -view_name <MvName>
For the split operation, the -sg <SgName> option to specify the source SG, for example, EnhancementsSgParent for the split operation.
For a cascaded (parent child) source SG, the <SgName1> (EnhancementChild1 for example) option is used to specify the child SG to split from the parent. Use the view_name option to specify the name of the new masking view to be created. The source SG must be in a single masking view.
The result is a stand-alone SG with its own masking view, using the same components as before the split, that is fully capable of being migrated using NDM. For guidance on how to migrate the SG, see the section Metro-based NDM Walkthrough Guide