Specifying the server as a filename in your program overrides any configuration file settings.
select account-file assign to "$$server1\c:\accounts\main.dat"
This SELECT statement tells the File Handling Redirector module to direct requests for this data file to the Fileshare Server named server1. The data file is main.dat in the directory accounts on drive c: on the Fileshare Server machine. The File Handling Redirector module passes the characters appearing after the text string $$server1\ to the Fileshare Server as the name of the file.