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Windows SBS 2011 and Exchange 2010 memory usage limits

Problem: If you are using ArchiOffice, EngineerOffice or Web Suite on Microsoft Small Business Server (SBS) 2011 with Exchange 2010 running, you must limit the memory consumption of Exchange.

Solution: The Microsoft Exchange Information Store service that is a part of Exchange 2010 installed with SBS 2011 seems to continually grow in memory usage over time.  To avoid this problem, you can limit the amount of memory Exchange is using. Note that you must set both a minimum as well as a maximum amount, else Exchange will not use your maximum value. To do so:

1. Start by opening ADSIedit--either click Start > Run > ADSIedit.msc or navigate to Start > All Programs > Administrative Tools > ADSI Edit.

2. Right-click the root of the tree view on the left and select Connect To. Change the 'Select a well known Naming Context' drop-down to 'Configuration'. The other default settings are fine and should be set to this:

ao connection settings.png

3. After being connected, you might want to navigate to the correct location: Configuration > Services > Microsoft Exchange > {Your Organization Name} > Administrative Groups > {Your Administrative Group} > Servers > {Your Server Name} > InformationStore.

4. Right-click InformationStore; edit both msExchESEParamCacheSizeMax and msExchESEParamCacheSizeMin. You must set both the minimum and maximum values for it to work properly--the values must relate to the pages in KB. For Exchange 2007, these are 8 KB pages and for Exchange 2010 they are 32 KB pages. See the table below for calculated values

For now, we are using a minimum of 1 GB and a maximum of 4 GB on Exchange 2010.

ao infostore properties.png

5. After you make the changes, restart Microsoft Exchange Information Store service for the changes to become effective.

Memory Size in GB

CacheSize Value for Exchange 2010 (32 KB pages)

CacheSize Value for Exchange for 2007 (8 KB pages)

1

32768

131072

2

65536

262144

3

98304

393216

4

131072

524288

6

196608

786432

8

262144

1048576

10

327680

1310720

12

393216

1572864

14

458752

1835008

16

524288

2097152

18

589824

2359296

20

655360

2621440

The formula used to calculate these values are:

Exchange 2010: (Number of GB * 1024 * 1024) / 32 = Target Cache Size

Exchange 2007: (Number of GB * 1024 * 1024) / 8   = Target Cache Size

Source: https://www.bdhtechnology.com/help/exchange_information_store_memory.php



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Article Details

Last Updated
26th of November, 2013

Product
ArchiOffice, EngineerOffice, Web Suite

Operating System
Microsoft SBS 2011

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