Hello, 

I have to site with vSphere clusters and two vcenters in linked mode configuration, we want to use two Powerstore clusters to replicate between the sites using Metro volumes: 

1. Is vSphere stretched cluster (vSphere Metro Storage Cluster configuration) a requirement to use Powerstore metro volume between two sites?
2. Does Metro volume support only vSphere hosts? 
3. Can i configure a metro volume with only one vCenter and one vSphere cluster in site A to replicate only the storge to site b without using the vMSC configuration? 

Thank you.