I'm managing a co-located winserver08 box running both IIS and SQL 08 express. I just happened to glance at the task manager's performance tab and find the 'mem usage history graph is close to topped out reading 1.8 gig (i have 2 gig physical ram). Processes shows sqlserver is running at 940,000K - by far the largest consumer.
I'm a low volume site - cpu utilization barely registers. Haven't had any stability issues with the server at all. Is this just how SQL treats available mem or should I be digging deeper?