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This test enables administrators to determine how many guests have registered with the XenServer, and how many of these are currently running. In addition, the test also indicates whether any guests have migrated to or from the virtual server. XenMotion is a feature using which virtual machines can be moved from server to server within a Citrix XenServer resource pool without service interruption, making zero-downtime server maintenance possible, and enabling administrators to move resource-hungry running applications to take advantage of available compute power. In short, the XenGuestStatusTest monitors the effectiveness of XenMotion.

Measurement	Description	Measurement Unit	Interpretation
Added_guests	Indicates the number of guests that were newly added to the XenServer during this measurement period	Number	The detailed diagnosis of these measures, if enabled, lists the virtual machines that were migrated by XenMotion to or from (as the case may be) the XenServer.
Removed_guests	Indicates the number of guests that were newly removed from the XenServer during this measurement period	Number
Registered_guests	Indicates the total number of virtual machines that have been registered with the XenServer	Number
Running_guests	Indicates the total number of virtual machines that are currently running	Number
Suspended_guests	Indicates the total number of virtual machines that have been suspended	Number	You can suspend a XenVM, saving its state to a file. This allows you to shut down the physical XenServer host and later, after rebooting it, return the XenVM to its original running state.
Halted_guests	Indicates the number of guests that were stopped	Number
Guests_with_users	Indicates the number of powered on guests with users logged in.	Number	*This measure is applicable only to Xen_desktop_server* component**. To know which guests the users have logged into, use the detailed diagnosis capability of this measure (if enabled).
Guests_without_users	Indicates the number of powered on guests with users logged in.	Number	*This measure is applicable only to Xen_desktop_server* component**.