Information Data of Redundancy Chia-Chen Hsieh Department of Computer Science and Information Engineering Fu Jen Catholic University

2 Overview Introduction – Sources (3/16) Information Data redundancy (3/16) Hardware redundancy Software redundancy System Integration

3 Introduction

4 Introduction (contd.) Data Information Data – 一般 一般 –Big FilesBig Files –Small FilesSmall Files Database –Full BackupFull Backup –Difference BackupDifference Backup –Increment BackuIncrement Backu HA (High Availability)

5 Introduction (contd.) Data Information Data – 一般 一般 –Big FilesBig Files –Small FilesSmall Files Database –Full BackupFull Backup –Difference BackupDifference Backup –Increment BackupIncrement Backup

6 Introduction (contd.) 可進行備份的時間

7 Information Data redundancy 交易的例子

8 Information Data redundancy (Contd.) 資料庫管理系統 DBMS 的處理流程

9 Information Data redundancy (Contd.) Check Point 示意圖

10 Information Data redundancy (Contd.) 當資料異常結束示意圖

11 備份的方法

12 恢復的不同處

13 備份模式 1

14 備份模式 2

15 備份模式 3

16 從一致性備份中恢復 / 復原

17 從非一致性備份中恢復 / 復原

18 High Availability and fail over Active / Standby mode

19 High Availability and fail over Active / Active mode

20 Thank you