I'm responsible for a corporate archives with a mandate to retain certain classes of records permanently. Since our organization uses Sharepoint for content and project management, I've been using the Sharepoint Record Center as the final repository for most of these records. I generally convert files I receive to PDF-A (if it makes sense for the file format), add some descriptive metadata based around the records content type, and upload. Multimedia files (images, video, audio files) are stored in a commercial DAM solution with descriptive metadata as well as extracted technical metadata.
I'm concerned that in the long term this will be inadeqeuate and wondering what steps I can take to insure permanency of these records. My organization will not support any open-source solutions which seems to be where most development in the area of digital presevation is happening.