Proper implementation of the 3GB switch in your boot file

shawnjoyner used Ask the Experts™
Hello! My question is if I can assume that the 3GB swith is on since it is in the line.  Also I would like to do this to my other servers.  What is the proper syntax for the 3GB switch.  And where do you put it in the line?  Also other than "/3GB" does anything need to proceeed this or follow this?

[boot loader]
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Windows Server 2003, Enterprise" /noexecute=optout /fastdetect /redirect /3GB /userva=3030
multi(0)disk(0)rdisk(1)partition(1)\WINDOWS="Boot Mirror C: - secondary plex"
C:\="Microsoft Windows"

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You would add the /3GB switch just as it's shown in your example, as an option at the end of one of the [operating systems] line.

Out of curiousity, why the desire to deploy this across the board?  If you're in an Active Directory environment, for example, the /3GB switch shouldn't be deployed to any domain controllers.


I am doing it to my SQL and Oracle servers.  That won't hurt anything will it?  And why wouldent you want to use it on a dc just out of curiosity?  I have 18G in each of my blade server dcs for memory.

Thanks Laura!

Use 3GB with caution because it limits the number of Page Table Entries (PTEs), particularly where a DC is concerned.

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