IBM Data Server DB2 - Manual (Page 149)

Chapter 3. DB2 client deployment 135
/S Specifies the share name of the code server where you installed the DB2
product. This parameter is necessary only if you did not map a persistent
network drive. This parameter is mandatory on Windows XP and
Windows Server 2003 operating systems.
Here is a sample command for thnsetup:
x:\thnsetup\thnsetup /P x: /U x:\thnsetup\test.rsp /M machineName
Upon completion of the thnsetup command, the db2.log in y:\db2log directory
should be checked for any message (where y is the drive on which the DB2 code
is installed).
All deployment methods should be tested in a test environment prior to full
deployment in a production environment.