虛擬技術有助於使用者在運行於實體硬體的作業系統（Host OS）中創造另一個虛擬的硬體環境，並能建立可執行客端作業系統（Guest OS）的虛擬機器（Virtual Machine）。虛擬機器中的客端作業系統將會使用虛擬環境技術提供的虛擬硬體裝置，如同擁有自己專屬的硬體環境。在此技術下，系統的安全性、資源分配及群集系統的管理效率都能大幅提升。 在現今效能不斷提升的硬體設備的支援下，使用虛擬技術是非常實際且確實能發揮功效的；虛擬平台的安裝也是非常容易就能達成的動作。但考慮到現存運行於實體硬體的作業系統，若要將這些服役中的系統做平台的轉移，目前可行的方式唯有重新安裝作業系統和重新佈署應用程式。明確地，如此方式並不能被現存的運作中的機器直接又高效率地採用。 本論文提出一個將執行於實體機器上的作業系統動態遷移至虛擬平台的方案，並詳細討論其中步驟，同時研究各步驟之可行性。透過此方案提供的動態遷移能力－搬移過程中可保持系統及運作於其上方之各應用程式之執行－許多不能容忍作業中斷之系統，如：需長時間運作的科學運算、即時回應的網路服務…等等，便能保持先前之運作進度，同時將系統運作平台從實體機器上切換至虛擬環境。 Virtualization technology helps user create a virtual environment which contains virtual machine that able to execute guest OS on the operating system currently running on a physical platform. Guest OS inside the virtual machine will use the virtual hardware device provided by virtual environment, just like a exclusive hardware environment for it. With sheltering of such technique, the security of system, resource allocation and management of cluster systems can significantly improve. With supports of hardware that performance increasing every day, the applying of virtual technology is indeed very practical and effective; virtual platform installation is also very easy to take action. however, taking into account the existing operating system running on the physical hardware, at present the only feasible way to switch platform from physical to virtual, is to reinstall whole operating system and re-deployment all applications. Clearly, this approach cannot be directly, effectively and efficiently use by the operation system on the existing machine. This paper present a solution for lively migrating of running operating system from physical platform to virtual environment, and discussed in detail the steps in which to study the feasibility of the various steps. provided through the program dynamics of migration - in progressing of moving, the process and operating system can maintain its execution - many cannot tolerate disruption of system operations, such as: the operation takes a long time scientific computing, real-time response to network services ... and so on, will be able to maintain the progress of the previous operation, at the same time, the system platform switch from the physical to the virtual machine environment.
