Having a lot of trouble configuring Novell NetStorage through iManager (in the end it didn't even show a single page in iManager) I found a better way to handle all the configuration stuff for NetStorage.

Just point your Browser to:

https://<Server-IP>/oneNet/nsadmin

And log in with your admin credentials. From there I was able to add a new authentication context after suffering from several errors like this one in the Apache error log file:

configuration error:  couldn't check user.  No user file?: /oneNet/NetStorage/

Oh, and by the way, shame on you Novell: I had an issuen open for not being able to add a new context to NetStorage through iManager for almost a month and nobody from your support team even bothered to tell me that there is this litte web console!