My Portal Site Collection Database size is 284 GB

Hi,

My SharePoint portal content database size has reached to 284 GB. The site collection has multiple sub sites and document libraries. As per Microsoft recommendations, the content db size should not be greater than 200 GB. If this is the case, Please let me know how can I divide my collection into multiple databases.

Should I divide contents by creating multiple site collection and dividing groups of sub sites into different site collections? What is the best solution for this problem.

Thanks

nn