Re: SC 4.0 - Unable to create resource groups

, that is not true (no seamless migration from VSC/SMVI to SnapCenter)!

NetApp has released a utility called 'NetApp Import Utility for SnapCenter & VSC' exactly for this purpose.

It can be accessed on the toolchest here: https://mysupport.netapp.com/tools/info/ECMLP2840096I.html?productID=62135&pcfContentID=ECMLP2840096

Resources

YouTube video on import utility: https://youtu.be/CEQmIEzNVfA

VMware community thread highlighting actual challenges and detailed step: http://community.netapp.com/t5/VMware-Solutions-Discussions/NetApp-Import-Utility-for-SnapCenter-and-Virtual-Storage-Console/m-p/137248#M9154

Feasibility for migration

• Check IMT tool to validate if vCenter, ESXi & ONTAP versions deployed in customer’s environment are supported
• SCV 4.0 supports vCenter 6.0U3 and above, ONTAP 8.3.1 & above
• VSC 7.1 supports vCenter 6.0 and above and ONTAP 9.1 and above
• SnapCenter requires customer to be on premium bundle if they have FAS/ AFF in the system (SnapCenter Standard controller-based license is automatically provided for customers on premium bundle only and not on base pack). Alternatively, they need to purchase SnapCenter Standard capacity-based license if they are using ONTAP Cloud or ONTAP Select.  For more details, refer Installation & Setup Guide, chapter “Using SnapCenter licenses”.

Detailed instructions

• Refer SCV-VSC-Import-README.pdf bundled along with the utility (NetApp-Import-Tool.zip) available at this link: https://mysupport.netapp.com/tools/info/ECMLP2840096I.html?productID=62135&pcfContentID=ECMLP2840096 

Limitations of the tool

1. SCV supports ONTAP 8.2.2 and higher. The migration utility will import only storage connections for VSC backup jobs that were performed on ONTAP 8.2.2 or later.
2. SCV doesn’t supports 7-mode and cluster mgmt LIFs. The migration utility will not import backups/ backup jobs on ONTAP 7-Mode systems or cluster management LIFs.
3. The utility does not import on-demand backup jobs.
4. Migrated backups do not allow you to restore from secondary snapshots since SnapCenter is not aware of the secondary update triggered by VSC.

Recommendations

1. The utility does not delete VSC metadata so you can go back and import again in case things go wrong. Do not uninstall VSC until you're 100% sure all backups are running in SC.  You can instead disable the VSC service.
2. You can try the dry run option in order to gain confidence about the utility without actually importing the data.

Hope this helps!