Use the Windows Performance tool to monitor paging and object memory.
To access System Monitor, select the object Logical Disk, the instance of the disk containing the file PAGEFILE.SYS, and the counter Disk Transfers/Sec. Put the Windows page files on different disks than your database dbspace devices. You can also monitor the Object Memory and the counter Pages/Sec. However, this value is the sum of all memory faults which includes both soft and hard faults.