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Защо SharePoint 2010 изисква 64-bit SQL?

Снощи на SUGBG срещата се зададе този въпрос. Отговора е, че перформанс-а е по-добър и възможностите за скалируемост са значителни. Ето го директно от блога на екипа на SharePoint в Microsoft:

Q: Why are you only supporting the 64-bit versions of SQL Server 2005 or 2008 for SharePoint Server 2010?
A: This decision was based on our current test data for SharePoint Server 2010 and real world experience from customers running SharePoint Server 2007 with 32-bit SQL Server.  SharePoint performance and scalability can benefit significantly from 64-bit SQL Server and the throughput increases are significant enough for us to make the difficult decision to only support SharePoint Server 2010 on 64-bit SQL Server 2005 or 2008.  It has been our strong recommendation for some time that SharePoint Server 2007 customers take advantage of 64-bit SQL Server due to the inherent performance and scale benefits it can provide.

Q: Where can I find more information on the advantages of 64-bit hardware and guidance on how to migrate SharePoint from 32-bit to 64-bit.
A: These two TechNet articles are a good starting point;

Advantages of 64-bit hardware and software (Office SharePoint Server 2007)

Migrate an existing server farm to a 64-bit environment (Office SharePoint Server 2007)