The article provides a detailed guide to strategies of Backup and Restoring Databases in SQL Server.
Understanding the need to do the backup is as important as creating the backup in SQL Server. It is not unusual for SQL users to face issues like a damaged database, and having a proper customized backup can help in such situations. A reliable backup and restore strategy can thus ensure data efficiency and minimize the data loss. Here are a few Backup Strategies that SQL users should implement in their program.
1. Database and Backup Location
You should separate the locations of your database and Backup by placing them on different devices. If you keep the Database and Backup at the same location, chances of losing the backup data increases if a system fails or database gets damaged. Having separate locations also improves I/O performance for production use of database and writing backups. It’s an effective strategy and is widely employed in many organizations.
2. Backup and Restore Strategy
There is always a Backup Portion and Restore portion in a planned strategy. Backups’ strategy should define the frequency and type of backups and the required hardware speed. It also includes the safety location of backups. Restore Strategy defines the criteria for performing restores and how to reach your database availability requirements. It should focus on minimizing the loss of data and information.
It’s advised to store the information of restore and backup procedures to avoid confusion and mismanagement.
3. Testing and its importance
Although implementing a Restore-Backup Strategy requires proper planning, managed execution, and data handling, it also requires careful testing. You should properly test your backup strategy to understand the nature of results and if those results are meeting the expectations and production goals of your organization.
You also have to understand the nature, size, usage pattern and requirement of the data for better results while keeping in mind the constraints on your resources like hardware, disk space and security of data.
4. How to Design a Backup Strategy
Once you work on your recovery model you can look into the factors of designing a backup strategy. Consider the frequency of changes and updates and if they are quite frequent, use scheduling differential backups which only capture the last full database-backup. Otherwise, go for full recovery model and select frequent log backups. If the changes and updates are only for small parts and not large, then partial backups are helpful. It entirely depends on the nature of your work and production goals.
One of the most important factors to consider is disk space, and space which the backup is going to use. To estimate the backup size of your database, you can use sp_spaceused system procedure.
5. Scheduling Backup
After strategizing the types of backups and restore strategies, you can specify the scheduling and the frequency of performance. It’s recommended to use regular backup scheduling to maintain database plan. Otherwise, chances of data loss and failure in restoring backup increases. There is Maintenance Plan Wizard which helps in scheduling the backups in SQL server. As a failsafe measure do keep a repair mdf tool handy.
Victor Simon is a data recovery expert in DataNumen, Inc., which is the world leader in data recovery technologies, including recover mdb and sql recovery software products. For more information visit https://www.datanumen.com/