What are the components of NetBackup for SQL Server?

Table: Components of NetBackup for SQL Server describes the components of NetBackup for SQL Server.

Table: Components of NetBackup for SQL Server

Component	Filename	Description
graphical user interface (GUI)	dbbackup.exe	You use this interface to browse database objects and backup images, create backup and restore scripts, and launch backup and restore operations.
driver	dbbackex.exe	Launches backup and restore operations.
library	dbbackmain.dll	Facilitates backup and restore activities, access to SQL Server, and other operations that NetBackup for SQL Server performs.

These components also interface with VxBSA.dll, which is a common NetBackup client module that connects NetBackup for SQL Server to the NetBackup server.

Figure: NetBackup for SQL Server components shows the relationships of NetBackup for SQL Server with other software components.

Figure: NetBackup for SQL Server components

The following interactions occur between NetBackup for SQL Server and other software components:

Every backup or restore operation is initiated through dbbackex.exe, in one of the following ways:
- Scheduled backups
  
  The NetBackup scheduler calls bphdb (1), which calls dbbackex (2).
- GUI-initiated backups
  
  dbbackup.exe invokes dbbackex.exe (3).
- Command line
  
  dbbackex.exe is invoked directly from a command line or third-party tool.
Dbbackex.exe makes function calls to dbbackmain.dll (4) to facilitate a backup or a restore operation. The operation is carried out as dbbackmain.dll facilitates one or more data streams between SQL Server and NetBackup server. The data stream (7) is established through VDI (5) and the XBSA interface (6). VDI interacts with SQL Server whereas XBSA interacts with the NetBackup database client.
The NetBackup for SQL Server GUI (dbbackup.exe) lets you browse for SQL Server objects, normally, databases, filegroups, and database files. dbbackup.exe invokes dbbackmain.dll (8) for accessing the SQL Server master database. NetBackup for SQL Server accesses information about SQL Server through ODBC.
The NetBackup for SQL Server GUI (dbbackup.exe) also lets you browse for SQL backup images. The NetBackup catalog contains the images you can browse. To access the contents of the catalog the GUI invokes dbbackmain.dll, which uses VxBSA function calls to access the NetBackup server database manager.