I am a contractor with a large government agency and a couple of the email servers are experiencing ‘1160’ memory errors and users are no longer able access their email via Outlook. These errors occur when the user connection peak somewhere between 900 and a 1000.
Both servers are running the Enterprise version of Exchange 5.5 but not the Enterprise version of Windows NT 4.0. Each Server has Quad 700Mhz Xeon processors and 2 GB of RAM.
We (the contractor) has argued the problem is that Information Store (STORE.EXE) does not have enough memory to handle the number of users and this coupled by the fact that Exchange Enterprise Edition is running on the Windows NT Server product, which the per-process address limit is 2 GB, instead of Windows NT Enterprise Edition (4GT), which increases this limit to 3 GB.
The customer said that they were told by Microsoft to remove 1GB of physical RAM because Exchange may not be addressing it correctly.
We believe this is a big load of crap and that we should add an additional 2 GB and upgrade to the Enterprise version of Windows NT or build a new server and move some users to the box.
The problem was solved at another site by reducing the amount data in the store by moving users to an additional server.
Comments and suggestions are welcome.
