I'm having a problem with one of my servers and the TSA500.NLM file.  The error 
log returns: "(TSA500.NLM 5.4 266) This data set is in use and cannot be 
accessed at this time".  My other NetWare servers do not have this problem.  It 
has been suggested to me that TSM is trying to back this NLM up while it is 
using it.  TSM server is MVS 4.1.0, client is 4.2.1.  My NetWare Administrators 
have suggested that I exclude SYS:\system from the backups.  

Has anyone else run into this problem with TSA500.NLM and do you exclude 
SYS:\system from backups?