If MS SQL Server backup comes to your mind, then SQL Server Recovery Models perform an important role in the backup. SQL Server backup and restore process occur in the context of the recovery model of the SQL database. Recovery models are created to control the transaction log maintenance. Every version of SQL allows the user to perform three recovery models: Simple, Bulk-Logged, and full. Among these models mostly used are Simple and Full recovery models.
These models only differ in their recovery and backup process.
Now, let’s discuss these three Models.
- Simple Recovery Model
The most widely-used Recovery Model is the Simple Recovery Model. Besides, using the model, SQL Server keeps only the least amount of data in the transaction log. Each time when the transaction reaches checkpoints SQL Server cuts the transaction log.
Using this SQL Server Recovery Model, in the databases, we can store full backup or differential backup only. You can’t recover the Database when existing at a point in time; you can only restore it when the differential backup or full backup occurred. Then, there is a chance of losing data made between the time most recent full backup and time of failure.
The simple Recovery model required a minimum administration, so it was a very simple technique to manage than other backup recovery models in bulk and complete. Restoration is not a proper choice for making systems where the loss of recent moves is unacceptable.
- It permits high-performance bulk copy operations.
- User Reclaims log space.
- Full Recovery Model
Full Recovery Model uses SQL Server to maintain the transaction log till you restore it again. This Model is designed to recover both full or database backups in connection with transaction log backups. When a database failure happens, then most flexibility restoring databases using this SQL in recovery models. Additionally, it preserves data modification in the transaction log. We can restore the database to a specific point in time by using this Full Database in Recovery Model.
- No loss of work due to damaged data.
- It can retrieve to an arbitrary point in time.
- Bulk-Logged Recovery Model
This SQL Server Recovery Model is a significant-purpose that works the same as the full recovery model. The only difference is in the method to handle bulk data modification operations.
The recovery model is easy to use a technique known as Minimal logging in which the bulk recovery model recovers these operations in the transaction log. This saves processing time, but restricts you from using the point-in-time restore.
- Permits a user to perform high-performance bulk copy operations.
- Requires minimum log space and is used by bulk operations.
Bulk Recovery Model and Full Recovery models provide the biggest protection for data. This Database in Recovery Mode believes in the transaction log to provide full recovery and to protect work loss in the large range of failure. The Bulk-Logged Recovery Model provides better performance and small log space utilization for certain operations.
Some extraordinary third party tools also provide SQL in Recovery Models by using SQL Database Recovery. This tool will provide the shortest path to the recovery Server.
The blog gives you a deep idea about SQL Server Recovery Models and you can select any appropriate recovery model as per our requirements. In the following above methods, the easiest method is using a third-party tool. Besides, the experts always recommend an individual to opt Professional method for SQL Recovery.