By default, the DSA will not keep prior versions of the Update Log File that
 it no longer needs. These log files are also used for incremenetal shadowing,
 so removal of earlier update log files may cause some shadowing agreements to
 perform a total update.
 The Archived Update Log Number attribute prevents the DSA from deleting the
 Update Log File. If this attribute is set to a number greater than zero,
 then all update logs files beyond this number will be preserved.

 Syntax:

 	SET  DSA ARCHIVED UPDATE LOG NUMBER <value>
 	SHOW DSA ARCHIVED UPDATE LOG NUMBER