/PAE switch Exchange 2003 16GB memory
ls,
I always used the /3GB and /userva=3030 switch on Exchange 2003 enterprise with 4GB of memory. Now I have 16GB of memory should I add the /PAE option also to gain performance ? (hardware used is BL480C)
Regards
Peter
July 6th, 2007 10:06am
In this KB article http://support.microsoft.com/kb/912376/en-us
Microsoft recommend do not install more than 4GB of physcial ram in Exchange 2003.
Exchange Server will not take advantage of additional RAM even if it is available
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July 6th, 2007 11:00am
Thanks for the quick reply,
Should the parameter /pae be used in the boot.ini when 4GB of memory is installed ?
Regards
Peter
July 6th, 2007 11:32am
In another kb http://support.microsoft.com/kb/827281/en-usto point out
Memory scalability
Because Exchange Server uses the /3GB switch as it scales up, the Exchange Server computer cannot efficiently use more than 4 gigabyte (GB) of RAM. Exchange Server does not support instancing, Physical Address Extension (PAE), or Address Windowing Extensions (AWE). Therefore, 4 GB of RAM is the maximum amount of memory that an Exchange Server computer can efficiently use.
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July 6th, 2007 11:41am