Ok, that sounds good. Putting in my own words to make sure I'm understanding, if my servers have a high PLE it's ok because their memory space is not being utilized to frequently and there's no need to flush it because no new pages are being created, the cache is being used. Now, if I see that number dropped and stay low, what kind of actions should I be taking in consideration? If it's low that means there's a lot of activity in the I/O. So should I be looking at programs/querys that are eating up the memory?