Hello jsprinkle1,   You should be able to use SCG.   Dell EMC Storage Systems: Administrator Guide for the metro node appliance Before you begin section Page 18 - [URL]   If you encounter any issues this should help How to Troubleshoot SRS v3 and Secure Connect Gateway v5 issues [URL]  
Hello, I'd like to upgrade an SRS VE to Secure Connect Gateway VE, but I need to confirm that it is supported with metro node. I see that the Secure Connect Gateway 5.00.07.xy — Virtual Edition Support Matrix <ADMIN NOTE: Broken link has been removed from this post by Dell> lists VPLEX, but I am concerned that it does NOT list metro node. When will metro node make the list?
Support for metro node