Here is one way you can determine if your server is doing soft or hard Page faults.
Hard vs. Soft
Hard Page faults indicate the server is going to the Hard Disk to retrieve needed data and place it in RAM.
Soft Page faults indicate it is going to RAM or Cache to get the data it needs. This is a normal for most programs
Setup Windows performance monitor with the following…
SOFT Page Faults = Cache Faults/sec & Page Faults/sec
Hard Page Faults = Page Reads/sec & Avg. Disk Sec/Read
As you can see from this screen shot this server isn’t doing any hard page faults.
If you notice consistent hard page faults, this could be by design, or you need to add RAM to the server or allocate appropriate RAM to the application. Either way, I’d recommend consulting with the application owner or company who created the application for proper guidance.