Two of these cmdlets are new, and they both relate to virtual machine eventing, a minor new feature in Windows Server 2012 that is not well documented at the time of this writing. According to Get-Help and Windows PowerShell documentation at http://technet.microsoft.com/en-us/library/hh848462, “[v]irtual machine eventing keeps Hyper-V PowerShell objects updated without polling the virtual machine host.” You should be aware that it is enabled by default, and you can use the cmdlets Enable-VMEventing and Disable-VMEventing to reenable and disable the feature, respectively.
Use Table 5-1 to review some of the important Windows PowerShell cmdlets and other commands that relate to server monitoring. (More cmdlets are available to manage events. For a full list, type get-command *event* | sort noun,verb at a Windows PowerShell prompt.)
TABLE 5-1 Common command-line tools for server monitoring:
CMDLET OR COMMAND-LINE UTILITY DESCRIPTION
Export-Counter Exports data that is returned by the and Import-Counter cmdlets
Get-Counter Gets performance counter data from local and
remote computers
Import-Counter Imports performance counter log files (.blg, .csv, .tsv) and
creates the objects that represent each counter sample in
the log
Get-Event Gets events in the Windows PowerShell event queue for the
current session
New-Event Creates a new custom event
Clear-EventLog Deletes all entries from specified event logs on the local or
remote computers
Get-EventLog Manages event logs and displays events contained within
those event logs
Enable-VMEventing Enables virtual machine eventing
Disable-VMEventing Disables virtual machine eventing
Logman.exe Manages and schedules performance counter and
event trace log collections on local and remote systems
