「SQL Serverを使ってオフラインバックアップとリストアを行う際に問題が発生する可能性があることを知ろう！」
Understanding the Benefits of Offline Backups and Restores in SQL Server
What are Offline Backups and Restores?
Offline backups and restores refer to the process of taking a backup of a SQL Server database that is not running. This is done by shutting down the SQL Server service and then taking a backup of the database files. Offline backups can provide more reliable and consistent backups than online backups, which require the SQL Server service to be running.
Benefits of Offline Backups and Restores
Offline backups and restores offer several benefits over online backups, including:
* More reliable and consistent backups: Since the SQL Server service is not running, there is less chance of data corruption or other inconsistencies in the backup.
* Faster backups: Since the SQL Server service is not running, the backup process is faster than with an online backup.
* Reduced resource usage: Since the SQL Server service is not running, there is less resource usage on the server.
* More secure backups: Since the SQL Server service is not running, there is less chance of unauthorized access to the backup files.
Drawbacks of Offline Backups and Restores
Offline backups and restores have some drawbacks as well, including:
* More time consuming: Since the SQL Server service must be stopped and restarted, this process can take longer than an online backup.
* More complicated: Offline backups are more complicated to set up and manage than online backups.
* Increased risk of data corruption: Since the SQL Server service is not running, there is an increased risk of data corruption or other inconsistencies in the backup.
* Potential data loss: Since the SQL Server service is not running during the backup process, there is a potential for data loss if the process is interrupted.
Conclusion
Offline backups and restores can offer several benefits over online backups, including more reliable and consistent backups, faster backups, reduced resource usage, and more secure backups. However, these benefits come with some drawbacks as well, including increased time and complexity, increased risk of data corruption, and potential data loss. It is important to weigh the pros and cons of offline backups and restores and decide whether they are right for your organization.
References:
SQL Server でオフライン バックアップおよびオフライン リストアを行うと問題が出ることがある
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1. SQL Server Backup (Search Volume: 3,888, Competition: Low)