New-SMBMapping vs. New-PSDrive

powershell-logoThis’ll be an expanding topic I suspect …

New-SMBMapping (link)

Seems to be the Microsoft’s preferred method.
Mapped network drive may fail to reconnect in Windows 10, version 1809

-UseWriteThrough is an option (Server 2019 & Windows 10 1809)

Overview of file sharing using the SMB 3 protocol in Windows Server
Controlling write-through behaviors in SMB

The Microsoft Desired State Resource Kit now uses it.
DSC Resource Kit Release January 2017

Mounting SAMBA drives from within Windows Nano server may need it.
Mounting Samba Shares inside Nano Server

New-PSDrive (link)

Establishes an SMB connection at the highest SMB dilect (ie. if SMB 3.1.1 is on the server, it’ll connect at that level)

Has a -Force parameter which allows you to overwrite existing drive mappings.

Remove-PSDrive does not work correctly for Networked Drives created using -persist and -scope Global

Further References

Mapping Drives Revisited