BaldingLoopMan (2/24/2010)
mem settings•If server memory is <= 3 GB, set min memory to 1 GB, and max memory to server less 512 MB.
•If server memory is > 3 GB, settings depend on the server platform (32-bit or 64-bit), presence of /3 GB in the boot.ini and on usage of AWE.
•For servers on 64-bit platform AWE is not required, and min memory should be server memory less 2 GB, max memory – server memory less 1 GB.
•On 32-bit platform with AWE : min memory and max memory should be server memory less 1 GB; without AWE – if /3 GB switch is not used, max memory = 2 GB, with the switch it is 3 GB (with min memory 1 GB less than that).
If you can I would leave at least 3GB for the OS in a 64bit system. Things like replication/connections/third party items all take up pieces of that memory space. I've run into quite a few issues as regards paging when not leaving plenty of room.