I'm trying to backup a remote NTFS drive running ADSM as an NT service.

The ADSM service is being logged on as "SYSTEM ACCOUNT", the default.

I am getting security errors on the remote NTFS drives, but my NT administrator 
assures
me that ADSM should have all the authority it needs.

Could someone please give me some hints as to what authority the NT service 
needs?

(The backups worked before switching to the NT service).