We use various EMC products: VPLEX, VNX and Recoverpoint
My biggest annoyance with these is the lack of a common CLI, let alone a PowerShell module.
I created a module, a work in progress.
You can download it at https://github.com/pdpelsem/powerEMC
VPLEX is based on the REST api
VNX is a unisphere wrapper
Recoverpoint is based on a plink wrapper.
Just save the powerEMC base folder in your modules folder.
Import-Module powerEMC $CredVplex = Get-Credential #your vplex service account $CredVNX = Get-Credential #your vnx sysadmin account $CredRPA = Get-Credential #your Recoverpoint admin account ... more later