Ok, so lets do a little math here.
In SharePoint 2007, you can define only 1 Records Center at a time for official files. A single site collection (including a Records Center) in its own content database might contain somewhere around 1 million documents at a meager average of 55KB per document. That keeps us under the 100GB content database recommended size limit.
1 million documents? Seriously? I suppose you could try to manage multiple records centers but this would get interesting if you actually needed to put something in legal hold in multiple records centers. So for all practical purposes, we were severey...