Interesting to see the database appliance history...
The appliance history has been moving fast...
2006-07 - Sun and Greenplum announced Postgress data warehouse appliance to be shipped on Sun hardware and OS some time back, where Sun would provide commercial support for Postgres.
2006-10- IBM responds with DB2 on IBM (third party linux OS) hardware integrated, as an end-to-end solution
2008-01 - Sun buys MySQL database
2008-04 - Sun and Kickfire announced MySQL data warehouse appliance with Sun stack
2008-09 - Oracle teamed with HP for integrated appliance solution.
2009-04 - Oracle, attempting to purchased Sun, for a complete end-to-end hardware, OS, database stack (and received 2 other database appliance stacks using alternate databases.)
It is nice to see Microsoft getting involved in database appliances!