If you have 2 unity systems, with one on each site, you should only add one unity to each cluster. The error message is quite common. Just restart the management service on each cluster. See this KB.  502814 : VPLEX: VIAS operations that require cross-cluster communication fail [URL] Log out of all GUI sessions, then log in to each cluster via SSH (but do not go into VPLEXCLI) and run:  sudo /etc/init.d/VPlexManagementConsole restart  Wait a few minutes before logging back in to the GUI
Hi all,  what is needed to control storage resources from VPLEX GUI? We have an Unitity System and we want to managed the provisioning from VPLEX GUI. So you have just one instance. For VNX and VMAX Arrays you must install the Solution Enabler with SMI-S Provider. Since Version 8.0 (Solution Enabler) the Support is just for VMAX. Which Settings are Software is needed to provisioned storage from VPLEX?  Thanks, Chris
Provisioning Unitity Storage from VPLEX GUI