The MS SQL Server is without doubt rich in features and it offers several options for backups too. Depending on your specific needs you can choose a backup option that suits you. For example in large organizations where it is necessary to meet strict compliance needs, complete backups may be necessary at quick intervals. In contrast in an independent department store or an educational institute, partial backups taken every week may suffice. Let’s discuss the major backup types in detail.
When we look at the partial backup feature, we find it extremely handy for mid tier firms looking to backup their primary file group and avoid wasting a lot of disk space. Needless to say that such a backup also serves well when there are several read only data groups in your data repository. However it is important to note that older iterations of SQL Server like ones released before 2005 may lack this feature.
Complete or Full Backup
This is by far the most popular backup choice and is widely used across the industry. Executing it from the SQL management studio is a piece of cake. You just need to select the Database option under backup component and copy the database at a place of your choice. However full backups can prove to be an overkill in many organizations where not many records are added with frequency.
Differential Backup – Ideal for most scenarios
A differential backup copies only that portion of data that was added to the database since the last full backup. This essentially allows you to save both time and also network bandwidth if your backup drive is stored on a remote machine. It also helps you in executing a complete recovery in quick time.
In some organizations a lot of multimedia data like images or video files may be stored in SQL database. Administrators working with a heavy data load prefer to create separate files for storing data and file backups serve the need of individually backing up each file. Using SSMS first choose the “File and Filegroups” option, just select the file you wish to backup and save it at a place of your choice.
Only Backups cannot avoid a data loss scenario in SQL Server
While backups in SQL Server can go a long way in securing the data stored in the database, it cannot serve as a guarantee for protecting recently stored data. Normally the data entered since the time of last backup is at risk in the event of a SQL crash. If you are looking to completely avoid a data loss situation, you need to keep a sql recovery tool like the incisive DataNumen SQL Recovery around. It can help you retrieve every single record stored in the database before it got compromised. Further the tool can be used to tackle corrupted NDF files too without a hitch. When it comes to dealing with files located on a removable media disk or even a virtual drive, the tool performs quite well.
Alan Chen is President & Chairman of DataNumen, Inc., which is the world leader in data recovery technologies, including access recovery and sql recovery software products. For more information visit https://www.datanumen.com/