Veritas NetBackup™ for Microsoft SQL Server Administrator's Guide
- Introducing NetBackup for SQL Server
- Installation and host configuration
- Host configuration and job settings
- Managing SQL Server objects for use with SQL Server Intelligent Policies
- About discovery of SQL Server objects
- About registering SQL Server instances and availability replicas
- Registering instances or availability replicas with an instance group
- Configuring backups with SQL Server Intelligent Policy
- About tuning parameters for SQL Server backups
- Performing restores of SQL Server
- Redirecting a SQL Server database to a different host
- Protecting SQL Server data with VMware backups
- About protecting an application database with VMware backups
- Configuring backups with Snapshot Client
- Using copy-only snapshot backups to affect how differentials are based
- About SQL Server agent grouped backups (legacy SQL Server policies)
- Protecting SQL Server availability groups
- Protecting SQL Server availability groups with intelligent policies
- Protecting SQL Server availibility groups with legacy policies
- About protecting the preferred replica in a SQL Server availability group (legacy backup policies)
- About protecting a specific node in a SQL Server availability group (legacy backup policies)
- About protecting the preferred replica in a SQL Server availability group (legacy backup policies)
- Protecting SQL Server in a cluster environment
- Configuring backups with legacy SQL Server policies using clients and batch files
- About using batch files with NetBackup for SQL Server
- About schedule properties
- Performing user-directed backups of SQL Server databases
- Performing user-directed backups of read-only filegroups
- Using NetBackup for SQL Server with multiple NICs
- Performance and troubleshooting
- About debug logging for SQL Server troubleshooting
- About disaster recovery of SQL Server
- Appendix A. Other configurations
- About SQL Server backups and restores in an SAP environment
- Appendix B. Register authorized locations
How does NetBackup for SQL Server back up a database?
When a backup is executed, NetBackup for SQL Server does the following: creates a backup script, generates an SQL Server backup statement, logs into SQL Server, and delivers the SQL statement to SQL Server through ODBC. Next, the database agent connects to SQL Server through one or more VDI objects. One virtual device is created per backup stripe. In addition, a VxBSA session is initiated for each stripe. These separate sessions allow NetBackup to start a backup job for each stream that is generated from SQL Server.
When the backup completes, the database agent obtains detailed properties of the object that was backed up, including its relationships to other objects. The agent writes this information to the NetBackup catalog and associates it with the backup image. If there are multiple stripes, then the metadata is associated with the first backup image. The adjunct stripes are associated with one another based upon a common naming convention.