What is a file and filegroup backup?

What is filegroup backup?

Using FILEGROUP backup one can backup all the data files within the SQL Server FILEGROUP individually. While backing up the database you can specify whole of FILEGROUP (i.e., PRIMARY or SECONDARY) instead of specifying each database file individually within the FILEGROUP.

What is file and filegroup backup in SQL Server?

When the database size and performance requirements make a full database backup impractical, you can create a file backup instead. A file backup contains all the data in one or more files (or filegroups). For more information about file backups, see Full File Backups (SQL Server) and Differential Backups (SQL Server).

What does copy only backup mean?

A copy-only backup is a SQL Server backup that is independent of the sequence of conventional SQL Server backups. Usually, taking a backup changes the database and affects how later backups are restored.

How many files are in a filegroup?

As a general rule of thumb, I recommend each filegroup having 2-4 data files, as this will give overall better I/O performance than a single data file. I've seen this over and over on client systems and you can see quite a few data points on the graph above reflecting that too.

How do I restore a filegroup from a backup?

To restore files and filegroups1Execute the RESTORE DATABASE statement to restore the file and filegroup backup, specifying: The name of the database to restore. ... 2If the files have been modified after the file backup was created, execute the RESTORE LOG statement to apply the transaction log backup, specifying:Restore Files and Filegroups (SQL Server) - Microsoft Docs

What is SQL filegroup?

The filegroup contains the primary data file and any secondary files that aren't put into other filegroups. User-defined filegroups can be created to group data files together for administrative, data allocation, and placement purposes.

How do I add a file to a filegroup?

Select the file type, data or log. For a data file, select the filegroup in which the file should be included from the list, or select <new filegroup> to create a new filegroup. Transaction logs cannot be put in filegroups. Specify the initial size of the file.