Hello, sith555,    Thanks for asking your question in the vVNX community.  You'll find the vVNX document that describes how to configure SMI-S here:   [URL]
Hi,  I have a problem to authenticate with the SMI-S on vVNX. I'm using TestSmiProvider to test the connection, but I always get - 401  Authorization Required. I tried the default credential and unisphere configured accounts, but none of them works. I tried to access "ecomconfig" via web, but it timed out.  Is there a documentation available, how to configure SMI-S on vVNX? 
SMI-S on vVNX