In various embodiments, user system 100 comprises {TAIL ~ one or more physical systems} with {HEAD ~ one or more processors}, one or more memories, and one or more other storage devices and one or more virtual environments in which a user application is executed 
In various embodiments , user system 100 comprises { TAIL ~ one or more physical systems } with { HEAD ~ one or more processors } , one or more memories , and one or more other storage devices and one or more virtual environments in which a user application is executed
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH