What recovery model is supported by database mirroring?
Mirroring is implemented on a per-database basis and works only with databases that use the full recovery model. The simple and bulk-logged recovery models do not support database mirroring. Database mirroring is supported in SQL Server Standard Edition and Enterprise Edition.
How does simple recovery model work?
The “Simple” recovery model is the most basic recovery model for SQL Server. Every transaction is still written to the transaction log, but once the transaction is complete and the data has been written to the data file the space that was used in the transaction log file is now re-usable by new transactions.
Why is mirroring not supported in simple recovery model?
Mirroring uses the transaction log to redo everything at the mirror site. In simple recovery model, the transaction log is effectively transitory and only enough information is kept in the log for undo/redo to keep the database consistent during crash recovery. So Database mirroring is not possible in Simple Recovery model as it is not supported.
What can not be done in simple recovery mode?
Operations that require transaction log backups are not supported by the simple recovery model. The following features cannot be used in simple recovery mode: Changes since the most recent backup are unprotected. In the event of a disaster, those changes must be redone.
Can you use SQL Server in simple recovery mode?
For information about database backups under the simple recovery model, see Full Database Backups (SQL Server). Operations that require transaction log backups are not supported by the simple recovery model. The following features cannot be used in simple recovery mode:-Log shipping-Always On or Database mirroring-Media recovery without data loss
Do you need norecovery to restore mirror database?
When preparing a mirror database, you must use RESTORE WITH NORECOVERY for every restore operation. Minimally, you will need to restore WITH NORECOVERY a full backup of the principal database, followed by all subsequent log backups.