Bài giảng Cơ sở dữ liệu nâng cao - Chapter 2: Disaster recovery. Chương này trình bày một số nội dung sau: Overview about database backup and recovery, backup & restore strategy, disaster recovery planning,. . | Chapter 2 Disaster Recovery 9/23/2011 1 Agenda Recovery technique Disaster recovery planning 9/23/2011 2 Overview about database backup and recovery Data is a critical asset for an organization to maintain information about its customers, inventory, purchases, financials, and products. A variety of failures can bring down your database. Anything from a user error to a natural disaster could take your database offline. Your backup and recovery plan needs to account for the possibility of these failures and more. 9/23/2011 3 Overview about database backup and recovery Types of failure: Media failure. User errors, for example, dropping a table by mistake. Hardware failures, for example, a damaged disk drive or permanent loss of a server. Natural disasters. 9/23/2011 4 Overview about database backup and recovery The purpose of creating SQL Server backups is to enable you to recover a damaged database. A well-designed backup and restore strategy maximizes data availability and minimizes data loss, while considering your particular business requirements. 9/23/2011 5 Backup & restore strategy The backup strategy defines: The type and frequency of backups The nature and speed of the hardware that is required for them How backups are to be tested Where and how backup media is to be stored (including security considerations) 9/23/2011 6 Backup & restore strategy The restore strategy defines: Who is responsible for performing restores How restores should be performed to meet the goals for availability of the database for minimizing data loss Designing an effective backup and restore strategy requires careful planning, implementation, and testing 9/23/2011 7 Backup method Database Engine provides four different backup methods: Full database backup Diferential backup Transaction log backup File (or filegroup) backup 9/23/2011 8 Backup method Full database backup: Capture the state of the database at the time the backup is started. During the full database backup, the system . | Chapter 2 Disaster Recovery 9/23/2011 1 Agenda Recovery technique Disaster recovery planning 9/23/2011 2 Overview about database backup and recovery Data is a critical asset for an organization to maintain information about its customers, inventory, purchases, financials, and products. A variety of failures can bring down your database. Anything from a user error to a natural disaster could take your database offline. Your backup and recovery plan needs to account for the possibility of these failures and more. 9/23/2011 3 Overview about database backup and recovery Types of failure: Media failure. User errors, for example, dropping a table by mistake. Hardware failures, for example, a damaged disk drive or permanent loss of a server. Natural disasters. 9/23/2011 4 Overview about database backup and recovery The purpose of creating SQL Server backups is to enable you to recover a damaged database. A well-designed backup and restore strategy maximizes data availability and minimizes .
