Store all types of archived data in a single repository. There is no need to separate archiving solutions for email, documents, images, database, etc...
All documents are auto classified upon archive. No user interaction required.
A typical document goes through multiple revisions and may be shared between workers via the email system. There are typically many copies of the same document in users Inboxes and file folders. A unified data warehouse can detect these duplicates and reduce overall storage.
It is compatible with any hardware and OS supporting the Java platform. Popular databases supporting Java can also be used. There are no special hardware and software requirements which reduce the overall cost of ownership.