I guess by now we all seen or read about the new SharePoint 2010 guidance on scaling limits announced by the product group today. To sum it up it this is the new guidance on content database sizing:
up to 200GB - still the recommendation 200GB to 4TB - yes, it’s been done and can be done (with the help of a skilled professional architect :-) 4TB or more - only for near read-only “record centers” with very sparse writing This looks good right, and it can be in some cases. But now on to the fine prints, which actually are written in the updated Software Boundaries and Limits article. If you read the announcement and the boundaries article you see that to be supported you need to follow a number of hard rules (such as IOPS per GB) and you must have governance rules (such as backup and restore plans) in place. Ok, if I got the IOPS needed, the best disaster recovery plans ever made and a skilled professional - should I go for the 4TB limit then? I think not, unless you really need the scale and have the hardware requirements.