Read Queues, Pages per second. Alerting Software. What is good and what is bad?

I am new to using GFI MAX. I am an MSP. I am using 24x7 monitoring software to monitor the memory and hard drive usage. I can set baselines and thresholds for max amounts before getting alerted but I am not sure what to set the baselines at on the alerting software. I keep getting this particular error

The test Performance Monitoring Check - Physical Disk: Total failed.
Additional information : Read Queue: 3.536

and this one

The test Performance Monitoring Check - Memory Usage failed.
Additional information : 543 Pages/Second

It was detected at night when no one is there. It is a pretty powerful server, my question is really what is a normal read queue for a hard drive (this one is a raid 1) and what is normal pages per second on the memory usage? What is good? What is bad? They are using Medisoft 17 (Medical Practice Software) and it is also the active directory server and DHCP Server.
I has 16 GB RAM. Quad Core Processors, Windows Server 2008 R2. It is also a terminal server for remote desktop although no one is on at night and I still got this error. I get errors like this on my other servers at different sites with the software too. And Like i said I know I can adjust the alerting threshold higher but I want to know more about read queues and what is bad and what is good. Same for memory.

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Mike KlineCommented:
Knowing the proper thresholds is tough.  Microsoft doesn't make it easy to find it either.  Have you ever used the PAL tool

Written by a Microsoft engineer it takes some of the guess work out of it.  Very nice tool; I plan to blog about using it with AD after the holidays.



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BlueLynxAuthor Commented:
Was not answer to actual question but rather led me in the right direction to find my own answer. Therefore I gave it a "good" rating.
David SpigelmanPresident / CEOCommented:
Would have been helpful if you had posted the solution you found. Any recollection?
Ummm.... BlueLynx,,, how about sharing? Mike Kline spent some of his precious time to help you out and you could not reply with what resolved your issue?
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