Moving location of built-in repository to a nas share - not supported?

Octopus 3.11.0 - I am installing Octopus for the first time and want to point the built-in repo to a NAS share. I can see the share and write to it, but the Octopus.Server.exe --nugetRepository command is failing.
E:\Program Files\Octopus Deploy\Octopus>dir \cifscorpap\odrepo\ich
Volume in drive \cifscorpap\odrepo is odrepo
Volume Serial Number is 009A-9A03
Directory of \cifscorpap\odrepo\ich
02/24/2017 02:46 PM .
02/24/2017 02:46 PM …
0 File(s) 0 bytes
2 Dir(s) 268,435,447,808 bytes free

E:\Program Files\Octopus Deploy\Octopus>echo “test write” > \cifscorpap\odrepo\ich\testwrite.txt

E:\Program Files\Octopus Deploy\Octopus>dir \cifscorpap\odrepo\ich
Volume in drive \cifscorpap\odrepo is odrepo
Volume Serial Number is 009A-9A03

Directory of \cifscorpap\odrepo\ich

02/24/2017 03:30 PM .
02/24/2017 02:46 PM …
02/24/2017 03:30 PM 15 testwrite.txt
1 File(s) 15 bytes
2 Dir(s) 268,435,447,808 bytes free

E:\Program Files\Octopus Deploy\Octopus>Octopus.Server.exe --instance=ich --nugetRepository="\cifscorpap\odrepo\ich"
Loading plugins from: E:\Program Files\Octopus Deploy\Octopus\BuiltInExtensions
Loading BuiltIn extension: AzureAD (2.0.4.0)
Loading BuiltIn extension: Directory Services (2.0.7.0)
Loading BuiltIn extension: GoogleApps (2.0.4.0)
Loading BuiltIn extension: Guest (2.0.1.0)
Loading BuiltIn extension: UsernamePassword (2.0.1.0)
Command ‘–nugetRepository=\cifscorpap\odrepo\ich’ is not supported

Even if I map the share to a drive letter, the command still fails.
E:\Program Files\Octopus Deploy\Octopus>dir O:
Volume in drive O is odrepo
Volume Serial Number is 009A-9A03

Directory of O:\

02/24/2017 02:46 PM .
02/21/2017 02:08 PM …
02/24/2017 03:30 PM ich
0 File(s) 0 bytes
3 Dir(s) 268,435,439,616 bytes free

E:\Program Files\Octopus Deploy\Octopus>Octopus.Server.exe --instance=ich --nugetRepository=O:\ich
Loading plugins from: E:\Program Files\Octopus Deploy\Octopus\BuiltInExtensions
Loading BuiltIn extension: AzureAD (2.0.4.0)
Loading BuiltIn extension: Directory Services (2.0.7.0)
Loading BuiltIn extension: GoogleApps (2.0.4.0)
Loading BuiltIn extension: Guest (2.0.1.0)
Loading BuiltIn extension: UsernamePassword (2.0.1.0)
Command ‘–nugetRepository=O:\ich’ is not supported

Hi,

Thank you for getting in touch. You are missing the path parameter, see moving octopus folders for more information.

Your command should be Octopus.Server.exe path --instance=ich --nugetRepository="\\cifscorpap\odrepo\ich"

Hope that helps

Robert W