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NetVault Plug-in for SQL Server 12.0 - User Guide

Introducing NetVault Backup Plug-in for SQL Server Planning your SQL Server deployment Installing and removing the plug-in Configuring the plug-in Backing up data
Defining a backup strategy Understanding snapshot-based backups Reviewing the compression features Performing Online VDI backups Performing VSS backups in SQL Server Example of creating a full VDI backup of an AlwaysOn Availability Group
Restoring data Troubleshooting

Differential Database backup for Online VDI

Differential Database backups are supported by:

With a Differential Database, back up only the data that has changed since the last Full Database backup is backed up. Differential backups are smaller and faster to create than the full backups.

A Differential Database backup is useful if some of the database’s tables are modified more frequently than others. In this case, Differential Database backups allow you to back up frequently without the overhead of Full Database backups.

Copy-Only backup for Online VDI

Copy-Only backups are supported by:

SQL Server versions: 2008 and later

Copy-Only backups are independent of the normal sequence of backups. A Copy-Only backup cannot serve as the base backup for a series of differential backups as a Full Backup can. Performing a Copy-Only backup does not affect what is backed up by the next differential backup. Copy-Only backups are ideal for situations that require special purposes, such as creating test environments or standby databases.

Incremental Transaction Log backup for Online VDI

Incremental Transaction Log backups are supported by:

Recovery Models: Full or Bulk-Logged Only

SQL Server Transaction Logs are essential to data recovery and must be backed up regularly. With Transaction Log backups, you can recover the database to a point-of-failure or specific point.

An Incremental Transaction Log backup captures all the transaction logs including those logs generated since the last Full Database/File or Filegroup, Differential Database/File or Filegroup, or Incremental Transaction Log backup. An Incremental Transaction Log backup should not be performed in the following conditions:

Tail-Log backup for Online VDI

Tail-Log backups are supported by:

SQL Server versions: 2008 and later

A Tail-Log backup captures the transaction logs that have not yet been backed up and is the last backup restored in a restore sequence. SQL Server requires you to back up the tail of the log before restoring a database that is attached to the SQL Server Instance. Therefore, a Tail-Log backup is the first step in most restore sequences.

A Tail-Log differs from an Incremental Transaction Log in the following ways:

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