Webserver Failure Logs

I have a webserver monitor setup and it is set to test the IP address of the webserver.  The monitor is set to test the IP address and retun a failure if it takes more then 10 seconds to retreve the address.

I've noticed that the monitoring is picking up faulures in the middlle of the night when I expect to see less activity on the webserver. When it fails it always passes on the retry.

I'm trying to find out what is causing this, does anyone know where I should look on the webserver to try to find out what is causing these failures? Failure logs?

Thanks
EdAsked:
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thur6165Connect With a Mentor Commented:
You can run a performance monitor overnight to if the server is suddenly getting bogged down by something.
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BlazConnect With a Mentor Commented:
One common thing that can put quite a lot of stress on a server is backup - are you running backup or any scheduled task for that matter at the time that errors are reported?
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EdAuthor Commented:

no, not that I'm aware of. All backups run during the day and the server copes with that with no errors.
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Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

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BlazConnect With a Mentor Commented:
How about database maintenance, server log rotating etc.

Maybe disk spin down during low traffic?

How often does the monitor check the server?

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EdAuthor Commented:
The monitor checks every 10 seconds.
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EdAuthor Commented:

Thanks

What performance monitor do you recommend?
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thur6165Connect With a Mentor Commented:
Check the disk queue length for each logical drive and the processor usage.  
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