Exchange 2003 working slow

Hi All,

I am using Exchange 2003 on a MS Windows 2003 server 32bit with only one organization in a domain environment.
A few weeks ago it started answer slowly for Outlook users telling "trying to retrive data from mail.domain.com server"

I have run Exchange Best Practices Analyzer tool to check for integrity and it found some critical issues like "system pages set too high" and "HeapDeCommitFreeBlock Threshold" not set.

Are these causing my slowness of the server or should I look for something different?
And how can I / should I fix these?
thanks
agriboy1980Asked:
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Patrick BogersDatacenter platform engineer LindowsCommented:
Hi,

First i would start examining the Windows event logs and run chkdsk. Are there any issues reported with (possible) failing hardware like raid controllers?

Next what does task manager tell you for performance? What services are demanding lots of resources?
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DhananjayTechnical ConsultantCommented:
Set your "HeapDeCommitFreeBlock"  option in registry. To set value refer below link:

http://technet.microsoft.com/en-us/library/bb123610(v=exchg.65).aspx

http://support.microsoft.com/kb/315407


If still issue persists then make sure following things.

1)  your exchange database and installation folder excluded in antivirus scan.
2) your operation system and exchange server update with latest service pack and windows update.
3) Check on the server any other application or process utilize more memory.
4) run the command chkdsk on the your system and other drive if you found an error in window file system then repair the an error.
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agriboy1980Author Commented:
Hi  Patricksr1972,

I have a Fujitsu TX100 S1 server which has a Serverview software for checking hardware information. According to this (and Event Viewer) everything operates normal on the hardware side.

In service I have the store.exe and the ekrn.exe which consuming resources but only a very small amount of RAM and CPU.
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agriboy1980Author Commented:
Alright, I have configured the "HeapDeCommitFreeBlock" according to the link above.

Do you know maybe what should be the optimal "System pages" number? It says now it is too high (4294967295)
FYI, my server has 4GBs of RAM and is an Intel Xeon X3220 @ 2,4GHz

Thanks
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Simon Butler (Sembee)ConsultantCommented:
"FYI, my server has 4GBs of RAM"

That will be a problem for a start.
Exchange 2003 is a 32 bit application and it cannot cope with that much RAM.
This will seem mad, but taking out RAM will help things a lot. I never put more than 2gb of RAM in to an Exchange 2003 server, no matter how many users.

Simon.
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agriboy1980Author Commented:
Ok, let us suppose I take out 2 GBs of RAM.


Should I reset also the "HeapDeCommitFreeBlock" threshold too? Because I have already changed it.
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Simon Butler (Sembee)ConsultantCommented:
Yes, because it is tied to the amount of RAM in the system.

Simon.
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agriboy1980Author Commented:
Do you know maybe what should be the optimal "System pages" number? It says now it is too high (4294967295)

Thx.
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agriboy1980Author Commented:
I have found the solution. I have a W2k3 OS and I found that the optimal system pages number is 0.
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agriboy1980Author Commented:
The critical problems has been disspeared from the Best Practices Analyzer tool.
Somehow the server still seems to be slow in responsing time.
If I check one of the users outlook client, and trying to change the order of the date column outlook seems to be doing nothing for at least 20 secounds, and after a pop-up window is coming saying "trying to retrive data from mail.mydomain.com"
The thing is I receive this message at the local network user's outlook.
Is there a way to speed things up maybe?

Thanks
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Simon Butler (Sembee)ConsultantCommented:
There is no sure fire performance fix. There are lots of reasons why Exchange 2003 can be slow - storage is the main hit, but also just the fact that it is a 32 bit application that is basically 14 years old.

Microsoft have a performance troubleshooter for Exchange 2003, which you can run on the system. That could pinpoint where there are problems and give some guidance on where you can improve things.

Simon.
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