Store.EXE high memory Usage

I recently installed Exchange 2010 & transferred 20 mailbox from 2003 to 2010. After the conversion, my memory usage is 100%, where 85% is used by Store.exe .
how can i reduce the memory usage.
I have 24GB memory on my server
RamgkrishAsked:
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gweeeepConnect With a Mentor Commented:
The below link has the steps for limiting memory usage, but it is not recommened by MS because Exchange 2010 is designed to use as much memory as it wants.  Though there may be a case for you to use it, that's for you to judge:

http://eightwone.com/2010/03/25/limiting-exchange-2010-database-cache/
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Lee W, MVPTechnology and Business Process AdvisorCommented:
Exchange 2003 was 32 bit and the memory was limited to 4 GB - but Exchange 2007 and 2010 are 64 bit and to provide the best performance, will, in general, use ALL AVAILABLE MEMORY.

Some reading:
http://msexchangeteam.com/archive/2008/08/06/449484.aspx
http://www.networksteve.com/exchange/topic.php/Exchange_2010_memory_usage_(w3wp.exe_and_store.exe)/?TopicId=13866&Posts=3
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RamgkrishAuthor Commented:
1005 memory usage, iIt is gud or bad?
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RamgkrishAuthor Commented:
Sorry its 100% memory usage gonna affect my other functions such as backup or virus update on my exchange server??
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AkhaterCommented:
This is a normal behavior, exchange will always reserve all the memory it can to reduce disk operation and will release some of the memory to the system as needed

http://technet.microsoft.com/en-us/library/bb691304(EXCHG.80).aspx
http://technet.microsoft.com/en-us/library/ee832793.aspx
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RamgkrishAuthor Commented:
i will exchange as it is!
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