There are two use-cases that can cause inadvertent recall of files archived via StorNext when using Mac OS X 10.4 clients.
The first is the use of Get Info to view file details.
The second is the use of Column View in Finder.
Both of the above read metadata utilizing methods that are unblockable by the ArchiveConnect software. The workaround for these two issues is to not use them; Get Info is an action that is user-initiated, and Column View is one of several options for viewing file lists in Finder. A better solution is to upgrade to a later version of Mac OS X.