Pages Input per Second Spiking Daily I'm still learning a lot about SQL Server and pretty green, but doing the best I can as an accidental DBA. 

We have recently purchased a SQL monitoring software package, and after adjusting the threshold on alerting so I'm not bombarded with false positive warnings, I noticed that the pages input per second spikes every day at exactly the same time:  6:20:30 PM.  The only variation in time over the last week was just last night, when it alerted again at 6:19:39 PM.... very very close to the same time!

I have checked the server job schedules and it appears there are no jobs scheduled around that time.  The earliest job we have kicking off is at 9pm daily, so that's not it. 

Can anyone tell me what I can look at (or for) that will help me find what is causing this to happen at exactly the same time every day? 

Thanks much!
It is OS performance counter and refers to reads of page file. Generally it points to low memory condition on server. With your provided info no specification can be made about the issue. You need to monitor the server processes at that time. Also have a look at other applications consumption if exist on same server along with SQL Server.