SQL Server stores data in 8 KB pages. Do these pages make up the MDF file or are the 8KB pages the cache?

I am a little confused.

SQL Server stores data in 8 KB pages. Do these pages make up the MDF file or are the 8KB pages the cache?
Mr_ShawAsked:
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Aneesh RetnakaranDatabase AdministratorCommented:
8 pages will make an extent, and multiple extents will result in mdf and ldfs
sql reads multiple pages from the physical disk to cache
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Mr_ShawAuthor Commented:
I'll have to return to this question tomorrow morning.

Thanks
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Mr_ShawAuthor Commented:
thanks
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Microsoft SQL Server 2005

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