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Windows 2008 Cached Memory

We have a Windows 2008 Ent Server that we are using to run SQL 2005.  I have noticed that Windows 2008 is very aggressive with caching memory.  See attached screen cap showing how much the OS likes to cache.  I am not saying this is a bad thing - I am just looking for any documentation (from Microsoft) that explains why/how the OS caches memory.
CacheMemory.JPG
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dlarock
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dlarock
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mkbeanCommented:
I found this PDF to be a useful read after 2008 was released.  

http://www.kingston.com/channelmarketingcenter/oemspecific/literature/MKMS_1068_MSWS_wp_bw.pdf

Brian
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dlarockAuthor Commented:
Thank you - I will read that PDF and reply back.  Right now it appears as if we have narrowed down the issue to a bug in the numa memory allocations of the file system cache on 2008.  MS has a hotfix for it.  The issue seemed to have manifest itself when when doing large file copies off the system.

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mkbeanCommented:
You were spot on with 2008 having a different memory management system though.  It seems to cache a large amount no matter what.

Brian
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