Hi TSMers!
        The whitepaper
(http://www-1.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/WP100254)
states as one of the possible solutions to the DB growth driven by Archives
to:

"Unconvert the Node and then Convert the Node. This will force the node to
use the new table structure within the TSM Database. This new structure is
more efficient."

Does anyone know how to unconvert a node?

Also does anyone know how to change (not delete) the archive descriptions?
(in order to make them shorter and use less space in the DB)

Thanks in advance
Alex