SQL Server Recovery Models: Explanation and Usage

SQL Server offers three main recovery models, each designed to provide a different level of protection for your database:

1. Simple Recovery Model

The Simple recovery model is the most basic option and offers minimal protection for your database. It only allows for full backups, making it suitable for non-critical databases where data loss is acceptable. This model does not support point-in-time recovery.

2. Full Recovery Model

The Full recovery model provides the most comprehensive level of protection for your database. It allows for full backups, differential backups, and transaction log backups, enabling point-in-time recovery. This model is recommended for critical databases where minimizing data loss is crucial.

3. Bulk-Logged Recovery Model

The Bulk-Logged recovery model is a middle-ground option between Simple and Full. It allows for full and differential backups like the Full model but simplifies the logging of bulk operations to improve performance. This model is suitable for databases with large bulk operations that do not require point-in-time recovery for those operations.

When choosing a recovery model in SQL Server, consider the importance of your data, the acceptable level of data loss, and the performance impact of logging for bulk operations. Select the model that best aligns with your recovery and performance requirements.