@startuml

package rack1{
	package server1 {
		[vserver1]
		[vserver2]
	}
	package server2 {
		[vserver3]
		[vserver4]
	}
}
package rack2 {
	package server3 {
		[vserver5]
		[vserver6]
	}
}
package rack3 {
	package server4 {
		[vserver7]
		[vserver8]
	}
}
[vserver1] --> [vserver3]
[vserver3] --> [vserver8]
[vserver1] --> [vserver7]
[vserver4] --> [vserver2]
[vserver5] --> [vserver6]
[vserver6] --> [vserver8]
@enduml