You can set the LOGARCHMETH1 parameter with two values:

DISK 

This value must be followed by a colon(:) and then a fully qualified
existing path name where the log files will be archived. For example, if
you set logarchmeth1 to DISK:/u/dbuser/archived_logs the archive log
files will be placed in a directory called /u/dbuser/archived_logs.
Note:
If you are archiving to tape, you can use the db2tapemgr utility to
store and retrieve log files.

TSM

If specified without any additional configuration parameters, this value
indicates that log files should be archived on the local TSM server using
the default management class. If followed by a colon(:) and a TSM
management class, the log files will be archived using the specified
management class.

TSM is the Tivoli Storage Manager management class name.

tsm_mgmtclass - Tivoli Storage Manager management class configuration
parameter
Configuration Type Database Parameter Type Configurable
Default [Range] Null [any string] The Tivoli Storage Manager
management class determines how the TSM server should manage the backup
versions of the objects being backed up.

The default is that there is no DB2-specified management class.

When performing any TSM backup, before using the management class
specified by the database configuration parameter, TSM first attempts to
bind the backup object to the management class specified in the
INCLUDE-EXCLUDE list found in the TSM client options file. If a match is
not found, the default TSM management class specified on the TSM server
will be used. TSM will then rebind the backup object to the management
class specified by the database configuration parameter.

Thus, the default management class, as well as the management class
specified by the database configuration parameter, must contain a backup
copy group, or the backup operation will fail.

Please see the DB2 online help on how to configure TSM as the archive
server.

AIX: http://publib.boulder.ibm.com/infocenter/db2luw/v8/index.jsp?topic=/com.ibm.db2.udb.doc/opt/tz0cfg05.htm


Windows: http://publib.boulder.ibm.com/infocenter/db2luw/v8/index.jsp?topic=/com.ibm.db2.udb.doc/opt/tz0cfg07.htm

Solaris: http://publib.boulder.ibm.com/infocenter/db2luw/v8/index.jsp?topic=/com.ibm.db2.udb.doc/opt/tz0cfg07.htm