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9.0

Exchange Server Standard Editon 2003 SP2 Boot.ini switiches and page file recommendations

Asked by rigneydolphin in Windows 2003 Server, Exchange Email Server

Tags: boot.ini windows server standard 2003 pae 3g b switch /fastdetect /3GB /USERVA=3030 /pae page file

Hi,

I recently upgraded our IBM XSeries 346 running Windows Exchange Server 2003 SP with extra RAM as it was performing poorly. We have over 500 mailboxes, users frequently send large attachments and our mail store is about 42GB! We previously had 2GB of PC-3200 installed but i repaced it with 4GB or PC5300.

We currently have a 2GB page file. The previous boot.ini file included the following switches
/noexecute=optout /fastdetect /3GB /USERVA=303

I had added the /3GB /USERVA=3030 switches a few weeks ago but they didn't improve performance. We had a very large page file and I noticed that % Disk Time and also Current Disk Queue Length would climb very high at peak times. I also reduced the page file to 2GB(equaling the physical memory size of 2 GB).

Since I have added 4GB of RAM tonight, I noticed BIOS recognized 4096MB RAM but Windows only recognized 3.25GB of RAM as I would expect. I did some research and confirmed that in normal operation 32-bit operating system will only address 3.2GB max.

I added the switch to the boot.ini to force the server address 4GB /PAE, rebooted and and sure enough it found the 4GB! Happy days.

The current switches now as of tonight are as follows
/noexecute=optout /fastdetect /3GB /USERVA=3030 /PAE

I'm wondering what experienced exchange users would recommend setting the page file for this setup to (currently 2GB) ?

Also would you recommend keeping the /3GB /USERVA=3030 switches?

Thanks,

Paddy
[+][-]11/05/09 04:16 AM, ID: 25748647Accepted Solution

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About this solution

Zones: Windows 2003 Server, Exchange Email Server
Tags: boot.ini windows server standard 2003 pae 3g b switch /fastdetect /3GB /USERVA=3030 /pae page file
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Solution Provided By: MidnightOne
Participating Experts: 4
Solution Grade: A
 
[+][-]11/04/09 06:47 PM, ID: 25746331Expert Comment

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[+][-]11/04/09 07:40 PM, ID: 25746572Expert Comment

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[+][-]11/04/09 10:28 PM, ID: 25747159Expert Comment

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[+][-]11/05/09 08:48 AM, ID: 25751360Author Comment

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[+][-]11/06/09 04:17 AM, ID: 25758427Author Comment

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[+][-]11/06/09 10:58 AM, ID: 25761960Expert Comment

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