From: Joni Moyer [mailto:joni.moyer AT HIGHMARK DOT COM] 
I have a TSM server 5.1.6.2 on os/390 2.10 and users backup their PC's to
TSM.  Previously they were asked for a userid and password to access TSM
for restores, backups, etc.  but now when they go to do this it is directly
connecting to the TSM server.  I have recently upgraded this server from
4.1.5 to 5.1.6.2, but we are using an exact copy of the opt file for the
tsm server.  Does anyone have any ideas/suggestions as to why this may be
occurring?  Thanks!

The line
 
passwordaccess generate
 
in the dsm.opt file allows the TSM client to store an encrypted copy of their 
TSM password in the Windows registry. That's why they don't have to 
authenticate.