Thanks for the clarification.
Alternatively, since I use a separate drive backup/mirror program that only copies new/changed files to the backup drive, would it make sense to have a catalog for the archive drive and one for the current year's local drive? Every ingest would get cataloged on the local drive for that year, then when I run a backup, switch catalogs and run the cataloging process off the Drobo for the additions to the backup environment?
Running a purpose built backup program has benefits over just doing a copy/past or drag/drop within a program like PM.
-Mike