ben.brugman (1/22/2013)
But how is it possible that SQL-server Expects that the memory can be refressed (8Gb of it) in 14 seconds ?I do not think normal disk IO (SAN) can handle that amount of IO.
How is the PLE determined?
Why don't you stop inventing your own definition of PLE and read the documentation?
http://msdn.microsoft.com/en-us/library/ms189628.aspx
Page life expectancy - Indicates the number of seconds a page will stay in the buffer pool without references.
And based on the above please try to explain what PLE has to do with disk IO and SAN?