These should give you the information you're looking for.

select filespace_name, min(archive_date) from archives where
node_name='NODE' group by filespace_name

and

select filespace_name, max(archive_date) from archives where
node_name='NODE' group by filespace_name

Alex Paschal
Storage Administrator
Freightliner, LLC
(503) 745-6850 phone/vmail