So what I hear you say is: Hook the UPS to the physical machine Have the host OS monitor the UPS's state When the UPS signals the host it sends a SIGHUP to the Virtual Machines The VMs should then interpret the SIGHUP as a Shutdown command Is that what you had in mnd? Does anyone know if that's how it works? Chuck -----Original Message----- From: "Mike" <mikeb@xxxxxxxxxxxxxx> To: "ncolug@xxxxxxxxxxxxx" <ncolug@xxxxxxxxxxxxx> Sent: 11/22/2007 8:26 PM Subject: [ncolug] Re: vm larry wrote: > Obviously, I am researching the Microsoft product. Obviously, I don't care about M$ products! I don't see this as a huge issue with zen, uml, or virtualbox. Don't know or really care about Vmware either. The virtual machine is simply a process to the host. Either it takes a signal to shutdown cleanly or it doesn't. Hopefully the former. If not it isn't worthy of any production related work. Mike To unsubscribe send to ncolug-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field. To unsubscribe send to ncolug-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field.