XADM: Memory Usage of Store.exe Is Higher in Exchange 5.5

• Microsoft Exchange Server, version 5.5

SUMMARY

When you run Microsoft Exchange Server version 5.5, memory usage of Store.exe as viewed from Task Manager Processes may be considerably higher than in previous versions of Microsoft Exchange Server.

MORE INFORMATION

In versions earlier than Microsoft Exchange Server 5.5, memory over 256 MB was not used. With version 5.5, memory up to 1 GB can be used and is used, as is evident in the Task Manager Processes.

Exchange 5.5 uses all available RAM for the best performance possible, unless memory usage is limited by using Exchange Performance Optimizer.

As per the Exchange Server 5.5 Readme.doc:

Significant changes were made to the database engine allowing Microsoft Exchange Server to better use large memory and multiple processor servers. In particular, Performance Optimizer will set the maximum number of information store and directory database buffers to much higher values than before (approximately the amount of available RAM divided by 4K).

Keywords          : XADM kbusage
Version           : WINDOWS:5.5
Platform          : winnt
Issue type        : kbinfo