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Exchange 2010 Eating All My RAM

Hey Everyone -

I recently deployed a SBS 2011 box with a quad core Xeon proecessor and 16 GB of RAM. I figured since it was recommended at 8GB of RAM i would double it. It looks like I may have been wrong.

As of right now, I'm always maxing out the servers memory. Im currently looking at 15 GB of RAM being utilized on the server and about 10GB of that is Exchange Services. Currently we host only 15 email accounts and provide ActivSync acces to about 5 of those accounts. We also only have an avg mailbox size of 500 mb since I thought that may be the problem.

I do notice that we have not installed the Service Pack for Exchange 2010 yet. Will this help at all? I dont think I need to throw any more RAM at it right?
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tecpub
Asked:
tecpub
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2 Solutions
 
Deepu ChowdaryCommented:
This was normal in Exch 2010 as well as in 2007. This is due to usage of memory for database cache, which reflects in performance.
U can limit it by changing msexcheseparamcachesizemax in Adsiedit.

Check this once.
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tecpubAuthor Commented:
Thanks guys.

With about 15 mailboxes on the system is there a recommended amount of RAM I should max out at? I'm thinking 8GB should be more than enough.
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morpheiosCommented:
Its depended on mailbox size and how frequently user run search for mail, sorts mail in by diferent columns. Try reduce to 8Gb, I think its enougth to, if its no complians from user reduce more.
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Deepu ChowdaryCommented:
If you reduce it ultimately then there will be some slowness.
Offcourse as said in that article, smaller organizations with a limited number of mailbox users may benefit because they don’t let Exchange claim significant amounts of memory which it will never use.
So giving 8 gb will be a good plan...
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tecpubAuthor Commented:
Wow what do you know... it worked! I knocked it down to 6GB and min of 256 and I reclaimed back about 6GB of RAM!

Thanks everyone!
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