Patent ID: 9116743
Filing Date: 2015-08-25
Classification: G06F

Abstract:
1. A non-transitory computer-readable storage medium storing program code for causing a computer to perform a method, the method comprising: creating a redundant configuration including a physical device as a primary device and a virtual device corresponding to the physical device as a secondary device by attaching a dummy of the virtual device to the computer based on identification information of the virtual device, the physical device being used by an operating system of the computer and the virtual device being available in a virtual machine running on another computer connected via a network to the computer; installing a device driver corresponding to the virtual device in the operating system; detaching the dummy of the virtual device; and after the dummy of the virtual device is detached, transferring memory contents and a disk image of the operating system including the device driver corresponding to the virtual device and a device driver corresponding to the physical device, to the other computer to migrate the operating system to the other computer, wherein in the other computer to which the operating system has been migrated, a process control is moved from the device driver of the physical device to the device driver of the virtual device, and the device driver of the physical device is uninstalled.