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What is filegroup backup?
Overview. In addition to doing “File” backups you can also do “Filegroup” backups which allows you to backup all files that are in a particular filegroup. By default each database has a PRIMARY filegroup which is tied to the one data file that is created.
Is Filegroup a valid backup in SQL Server?
Under the simple recovery model, a filegroup backup is allowed only for a read-only filegroup. For more information, see Create a Differential Database Backup (SQL Server). Under the full recovery model, you must also back up the transaction log.
What are the different types of backups?
There are mainly three types of backup: full, differential, and incremental.
What is full backup and incremental backup?
A Full Backup is a complete backup of all files on the designated hard drive. An Incremental Backup is a backup of all changed files since the last Full or Incremental backup. For example: Tuesday – All changed files since Monday.
How many files can be backed up in one filegroup?
Under the simple recovery model, a filegroup backup is allowed only for a read-only filegroup. Is a placeholder that indicates that multiple files and filegroups may be specified. The number of files or filegroups is unlimited. Specifies a list of from 1 to 64 backup devices to use for the backup operation.
How to do a filegroup backup in SQL Server?
A filegroup backup can be completed either using T-SQL or by using SSMS. For this example I created a new database called TestBackup that has three data files and one log file. Two data files are the PRIMARY filegroup and one file is in the ReadOnly filegroup. The code below shows how to do a filegroup backup.
Can a database backup be used as a file backup?
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).
When to use a partial or full database backup?
Use a partial or full database backup that contains the primary filegroup and all filegroups that were read/write at the time of the backup. It is common to start a partial restore sequence by restoring a partial backup. Specify the PARTIAL option, which indicates the start of a piecemeal restore.