隨著科技日新月異的發展，固態硬碟已被預期為下一期將被廣泛使用的儲存裝置。而本篇論文最主要的目的，就是希望能在固態硬碟的架構下完成虛擬硬碟的方法，並達到每個使用者皆擁有獨立性表現的目標。因為固態硬碟的硬體特性和傳統硬碟的特性是大不相同的，而使得過去虛擬硬碟方法在固態硬碟的架構下失去了獨立表現的特性。固態硬碟的三種特性：回收機制、內部平行以及裝置內部的排隊延遲時間，造成了過去的虛擬硬碟方法難以去預測每個使用者的儲存裝置資源的使用量，進而失去了公平表現的特性。
　　本篇論文提出了一個新穎的方法並設計在固態硬碟的轉譯層上，去解決以上所提及的問題。在我們的實驗表示，我們的虛擬硬碟方法和過去虛擬硬碟方法比較下，固態硬碟的處理能力擁有最為公平的表現，並且能夠根據不同使用者的資料特性，將回收機制的硬體資源花費完全分開。

With updating development of modern technology, the solid-state drives (SSDs) have been expected as the next generation storage device. This paper wants to achieve virtual storage method in NAND-flash based SSD and isolation performance for every user. But the SSD’s device characteristic is very different from Hard Disk Drive (HDD), which caused past virtual storage method is hard to achieve performance isolation in SSD. The SSD’s GC overhead, internal parallelism and the device queuing delay caused that past virtual storage methods have unfair performance because their storage resource accounting of per user is hard to predict.
VSSD brings up a novel virtual storage method and is designed in the Flash Translation Layer (FTL) of SSD to solve these problems. Our experiment shows that VSSD has best fair throughput performance, which can easily separate the GC overhead for every user with their data characteristic.

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