We run SQL 2008 on a VM of Win 2008 with 80G memory and in the Control Panel \ System it does show memory : 80 GB. But in the Task Manager \ Performance tab it shows the "Physical Memory" total = 32G. Does it mean the Win 2008 OS doesn't use more than 32G and we have been wasting the big amount of unused memory? What could be wrong?
Also, in SQL server properties / Memory pane, it shows the Minimum Server Memory = 2,048 MB and the Maximum Server Memory = 12,288 MB (please see the attached screen shot). Can you tell me if we should change the two numbers in order to optimize the SQL performance?