Hi
Setup DynamicsPerf and check the long queries, index missing, locks, blocking,etc.
blogs.msdn.com/.../dynamicsperf-2-0-deployment-guide.aspx
You can also setup the Windows Performance Monitor in order to log informations about disk, processor, memory and network related Db Server, AOSs, etc.
blogs.msdn.com/.../setting-up-windows-performance-monitor-templates.aspx