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SQL Server Clustering

Is it possiblt to span a DB to multiple machines? Can you give some good URLs explaining this in concept and if possible how to do it? Or can somebody explain it in details. Thanks in advance!
to a limited degree,
lookup federated databases in books online or on the microsoft web site
but this is really not a practical solution yet you really need to consider the cost of changing your application to federated design versus the cost of buying a big box and designing your application right

I believe ScaleUp is good solution for cost/design complaxiy/ managment as compared to ScaleOut [Federated DB].. But ScaleOut has added advantage for performance for Very Large or heavy transaction Databases. ms-help://MS.SQLCC.v9/MS.SQLSVR.v9.en/udb9/html/ba529247-103e-43a1-b7b0-7ef2028e4bbd.htm SQL 2005 BOL: – Distributed partitioned views are used to implement a federation of database servers. A federation is a group of servers administered independently, but which cooperate to share the processing load of a system. Forming a federation of database servers by partitioning data is the mechanism that enables you to "scale out" a set of servers to support the processing requirements of large, multitiered Web sites.
Deepak Kumar –This posting is provided “AS IS” with NO rights for the sake of knowledge sharing.
Look at the topic "Scalable Shared Databases" in BOL. Neat stuff but complex management/maintenance and it’s new stuff for MSCS which is not a scale-out solution but an HA one instead.