虛擬化已是許多大學廣泛使用的技術，已有許多大學因管理需求，開始導入虛擬桌面架構(Virtual Desktop Infrastructure, VDI)。在大學校園中使用VDI的虛擬桌面特性是有規模較大的使用者，且並不會太過於限制使用者的使用行為，這使得VDI環境中利用模板(Template)複製出來規格一樣的虛擬桌面之作法，無法有效進行運算資源管理；可能對有些使用者來說，運算資源給的太多，即會造成浪費，而對於需要運算資源的使用者來說，也只能使用到預設配給的運算資源。就管理者來說，大量且不易管理的使用行為將造成運算資源管理上的困難。
在VDI常用的架構下，為達到運算資源利用的最大效益，大多數虛擬化平台都有平衡伺服器運算資源使用的機制，作法通常是提供虛擬機器動態移轉到負載較低的伺服器，但這種機制僅以伺服器運算資源分配的角度來調整，並沒有針對虛擬桌面的運算資源使用狀況考量。如果整體伺服器運算資源負載過高是因為多台虛擬桌面同時運算資源耗用過高所造成時，一般虛擬化平台平衡伺服器運算資源的機制將無法得到改善。
本研究希望能從虛擬桌面的運算資源使用狀況著手，在大學提供的VDI服務環境下，建立虛擬桌面運算資源動態調整機制。此機制是在伺服器有足夠的閒置CPU資源時，依據使用者的虛擬桌面軟體與CPU資源使用狀況，來決定是否給予更多運算資源，以提升CPU資源的使用效率。此機制以VDI的虛擬桌面資源管理的角度，提升運算資源的使用效率，可供大學提供VDI服務的管理者對於運算資源管理上的參考。
Virtualization is a popular technology applied in the higher education. Many univer-sities have built-up Virtual Desktop In-frastructure (VDI) for management issues. There are several characteristics of VDI in campus: large-scale users and few limitations for us-age behaviors; therefore, it is not so efficient for computing resource management by ap-plying a “template” in the VDI environment to generate user’s virtual desktop with the same configuration. For some users, the resources are overrated. For those re-sources-demanded users, the allocation of resources is not sufficient. From management viewpoint, the massive and un-management user behaviors will cause the difficulties of computing resource management.
Under the normal architecture of VDI, most of the virtualization platform equip the mechanism of resource usage balance for server. The usual idea is transfer virtual ma-chines dynamically to server with low level rate loading, However, this method is consid-ering only with the viewpoint of server computing resource allocation, without the con-sideration of the resource usage for virtual desktops. If the overloaded situation of whole server computing resource is caused by resource overloaded of many virtual desktops, the normal resource-balanced method of virtualization platform can not work efficiently.
This research will provide a mechanism to adjust computing resources of VDI envi-ronment dynamically in Higher education by considering the computing resource usage from the virtual desktop viewpoint. This method will provide more computing resources by considering the computing resource usage demand of virtual desktop, and then, can enhance the efficiency of the whole CPUs in the virtualization environment. Therefore, managers of VDI in Higher education can use this research to improve the management of computing resources.
