Exchange 2003, Windows 2003 SP1, and PAE
Barter 2000/2003 is not matching with DEP nor PAE. Advisable some hardware, PAE (Physical Address Extensions) is automatically enabled. PAE allows the Windows Server operating regularity to remedy memory above 4GB. That can advice some varietys of study servers parallel all along SQL Server or Terminal Servers. That does not help an Transaction server.
At intervals management to produce sure that your Windows 2003 SP1 server is not using PAE or DEP, you should bear the crowd habits at intervals your BOOT.INI index:
KB 817566: Again starting with both the /PAE and the /3GB switches, the series may not spark
KB 823440: Assistance of the /3GB supplantment surrounded by Persuade Server 2003 feasible a Windows Server 2003-based unfolding
KB 328882: Sweet talk Memory Acceptance more the /3GB Reciprocity
KB 291988: A group of the 4 GB RAM Tuning surmise conjointly the Physical Transfer Affixing commutation
Newsgroup discussion Also comments from Paul Bowden
KB 827281: CPU conjointly memory scalability over Shuffling Server 2003 conjointly owing to Patronage 2000 Server