Is bvckup 2 worth it9/21/2023 Furthermore, only two transaction log backups are required to restore a database to a point in time between the time of the two transaction log backups. With SQL Server Snapshot Backup, after the initial full backup that is required by SQL Server to establish the backup chain, only a single transaction log backup is required to restore a database to the point in time of the transaction log backup. ![]() The only difference between BACKUP DATABASE TO URL WITH FILE_SNAPSHOT and BACKUP LOG TO URL WITH FILE_SNAPSHOT is that the latter also truncates the transaction log while the former does not. A consistent set of Azure snapshots make up a backup and are recorded in the backup file. SQL Server Snapshot Backup takes Azure snapshots of the database files (data and log files) at a consistent state. For more information, see SQL Server Data Files in Microsoft Azure. Used to create an Azure snapshot of the database files when all of the SQL Server database files are stored using the Azure Blob Storage. ![]() FILE_SNAPSHOTĪpplies to: SQL Server (starting with SQL Server 2016 (13.x)). Used only when creating a backup to the Microsoft Azure Blob Storage. CREDENTIALĪpplies to: SQL Server (starting withSQL Server 2012 (11.x) SP1 CU2). Specifies options to be used with a backup operation. Is a placeholder that indicates that a single BACKUP statement can contain up to three MIRROR TO clauses, in addition to the single TO clause. The number of devices in the MIRROR TO clause must equal the number of devices in the TO clause.įor more information, see "Media Families in Mirrored Media Sets" in the Remarks section, later in this article. Is a placeholder that indicates that up to 64 backup devices may be specified in a comma-separated list. For more information about block size, see "BLOCKSIZE" later in this topic. In order to mirror backups to devices that have different sector sizes, the BLOCKSIZE parameter must be specified, and should be set to the highest sector size amongst all the target devices. If the MIRROR TO disk is formatted with a different sector size than the disk specified as the primary backup device, the backup command will fail. Also review the option for SQL Server backup to URL for S3-compatible object storage.įor MIRROR TO = DISK, BACKUP automatically determines the appropriate block size for disk devices based on the sector size of the disk.
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