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博碩士論文 etd-0712112-175735 詳細資訊
Title page for etd-0712112-175735
論文名稱
Title
結合雙重遷徙架構之雲端服務
Dual Migration for Cloud Service
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
53
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2012-07-06
繳交日期
Date of Submission
2012-07-12
關鍵字
Keywords
雲端運算、服務遷徙、儲存區域網路、虛擬機器、換手程序、任意播送、累積備份
Cloud Computing, Service Migration, Storage Area Network, Virtual Machine, Handover, Anycast, Incremental Backup
統計
Statistics
本論文已被瀏覽 5656 次,被下載 535
The thesis/dissertation has been browsed 5656 times, has been downloaded 535 times.
中文摘要
現今無線網路技術快速發展,讓使用者無論何時地都能接取網際網路,經由網路享受各式各樣的雲端服務。但傳統的雲端服務架構,並未考慮使用者的地理位置,不論使用者在何地登入雲端服務,雲端系統皆分配同一伺服器服務使用者,因此當使用者到處移動時,使用者可能距離伺服器越來越遠,造成伺服器與使用者的傳輸路徑增長,使得傳輸延遲時間增加,雲端運算的服務品質降低,同時會佔據長距離的傳輸路徑,消耗大量網路頻寬,降低網路效能。
我們在本篇論文中提出雲端雙重遷徙架構(Dual Migration)。雙重遷徙架構包含連結遷徙(Connection Migration)和資訊遷徙(Information Migration)。本篇論文分成兩個部分:第一部分為靜態遷徙,當使用者移動到不同的地點,再次登入雲端系統時,我們會利用任意播送(Anycast)或中介伺服器(Immediate Server)找出距離使用者最近的伺服器,讓使用者從最近的伺服器存取雲端服務(Connection Migration),一旦使用者登出雲端系統,我們會預測使用者常出現的地理位置,把使用者私有資料放在最接近使用者的儲存區域網路(SAN)設備中,縮短伺服器下次載入使用者私有資料的時間(Information Migration);第二部分為動態遷徙,若使用者在移動的同時使用雲端服務,我們結合換手程序(Handover),在適當時間進行雲端連結遷徙(Connection Migration)與資訊遷徙(Information Migration)。
雙重遷徙架構考量使用者的地理位置,不論使用者在何時何地登入雲端服務,我們都能讓使用者由最近的伺服器存取雲端服務,因此能縮短伺服器與使用者之間的傳輸路徑,有效減少傳輸延遲時間,讓使用者在移動時或移動後皆能享有良好的雲端服務品質。
Abstract
none
目次 Table of Contents
第一章 導論 1
1.1 前言 1
1.2 研究動機 4
1.3 論文架構 7
第二章 相關背景與研究 8
2.1 雲端運算簡介 8
2.1.1雲端運算定義與特性 9
2.1.2雲端運算服務模式 11
2.1.3雲端運算部署模式 15
2.2.4雲端運算發展與挑戰 17
2.2 相關研究與論文 18
2.2.1傳統雲端服務架構 18
2.2.2服務遷徙相關研究 20
第三章 研究方法 25
3.1 情境假設 26
3.2 靜態遷徙(STATIC MIGRATION) 27
3.3 動態遷徙(DYNAMIC MIGRATION) 34
第四章 效能分析與模擬 40
4.1 雙重遷徙之模擬情境 40
4.2 雙重遷徙所需的同步時間 42
4.3 雙重遷徙之網路效能影響 43
第五章 結論 45
參考文獻 46
參考文獻 References
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