Recently doing work in the Teradata world again.

If your using Teradata, and, want to surface the data vis SSAS (apply models, security, aggregations etc etc) while still leveraging the power of Teradata (i.e. via ROLAP (i.e. no need to cache, create new stores etc)), have a look at the micro site @ http://www.microsoft.com/isv/teradata/default.aspx

Cut to the chase @ http://www.teradata.com/t/pdf.aspx?a=83673&b=170204 (Improve your OLAP Environment with Microsoft & Teradata)

(therefore, you can also use Perfomance Point against TeraData)