To check the server that is making the backups, check which is the host that the client is establishing the connection. In this case is the host called TSMSERVER
root@linux:~ # dsmc q file
IBM Tivoli Storage Manager
Command Line Backup/Archive Client Interface
Client Version 5, Release 5, Level 3.0
Client date/time: 08/08/11 17:30:49
(c) Copyright by IBM Corporation and other(s) 1990, 2010. All Rights Reserved.Node Name: LINUX
Session established with server TSMSERVER: AIX-RS/6000
Server Version 5, Release 4, Level 6.0
Server date/time: 08/08/11 17:30:37 Last access: 08/08/11 17:20:07# Last Incr Date Type File Space Name
— ————– —- —————
1 03/01/11 03:05:21 REISERFS /
2 04/14/11 17:49:16 REISERFS /boot
3 03/03/11 15:08:10 EXT3 /logs
4 06/18/10 21:37:39 REISERFS /opt
5 06/18/10 22:17:30 REISERFS /usr
6 06/18/10 21:39:56 REISERFS /usr/software
7 06/18/10 21:38:53 REISERFS /var