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Term

Definition

differential backup

A backup of the changed blocks since the last full backup.

transaction log

An ongoing record of updates that have been made to a database.

transaction log backup

A backup of the inactive portion of the transaction log. Typically, this portion of the transaction log is truncated after it has been backed up successfully.

restore

To copy data back to a SQL Server object (see “recovery”).

recovery

To bring a database online as a result of a restore.

SQL host

The host machine on which SQL Server resides. It may also refer to the virtual name of a cluster that supports a SQL Server installation.

SQL instance

A SQL Server installation. If an instance is not specified, it is considered the default SQL instance for the SQL host.

source client

A NetBackup term that identifies a host machine. The source client is commonly the network name of the host. It can also be an IP address or a cluster name, depending on how it is identified in the client configuration.

backup stripes

A data streams that is used for a backup or a restore of SQL Server objects. The user specifies the number of stripes for the backup. NetBackup performs a separate job each stripe that is specified.

multiplex

When more than one backup stripe is written simultaneously to the same tape.

multi-stream

Multi-streaming is the generic method in which NetBackup manages a backup or restore that includes multiple backup stripes. Multiplexing is an example of multi-streaming. NetBackup can also perform a multi-streamed backup by writing individual streams to individual drives.

ODBC

An open interface protocol that NetBackup for SQL Server uses to interact with SQL Server.

VDI

Virtual device interface. A proprietary interface that SQL Server provides for backup and for restore. The interface is used both for snapshot and for streamed operations. A VDI connection is managed as a COM object.

NetBackup for SQL Server terms

Table 1-1

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Introduction to NetBackup for SQL Server NetBackup for SQL Server terms

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