The folks at ThirdTier have a great article on the how’s and why’s of adjusting Exchange 2010’s memory usage. I suggest you read their blog post first. My intent here is to highlight and clarify the process, as there are some steps that were not clearly obvious to me.
As always, before starting – make sure you have a recent backup of your server. And be aware that you will need to restart Exchange at the end of this process!
- Log into your Exchange 2010 server (I’m running SBS 2011 Standard and Exchange 2010)
- Click on Start, type adsiedit.msc and press enter.
- In most cases, ADSIEdit will start with the Configuration node already selected. If not, KB 266768 explains what you need to do.
- Now, drill down the Container module as follows: Services –> Microsoft Exchange –> Your organization –> Administrative Groups –> Your administrative group –> Servers –> Server name –> Information Store
- Right click on the Information Store, then click Properties
- Scroll Down and locate the two attributes: msExchESEParamCacheSizeMax and msExchESEParamCacheSizeMin
- You will want to double click on each of these two parameters, and enter your desired value.
- What value should you use? Thirdtier suggests using 10GB/5GB for your max/min values. Adjust accordingly.
Please note: the ThirdTier article incorrectly states a value of 326780 for 10GB. The correct value is 327680.
- Click OK when finished.
- Restart your Exchange services for the changes to be implemented.