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view-or-configure-the-backup-compression-algorithm-server-configuration-option.md

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title Server configuration: backup compression algorithm
description Find out about the backup compression algorithm option. See how it determines the algorithm to use for backup compression, and learn how to set it.
author MikeRayMSFT
ms.author mikeray
ms.reviewer randolphwest
ms.date 10/18/2024
ms.service sql
ms.subservice configuration
ms.topic conceptual
helpviewer_keywords
backup compression algorithm [SQL Server], backup compression algorithm Option

Server configuration: backup compression algorithm

[!INCLUDE SQL Server 2022]

This article describes how to view or configure the backup compression algorithm server configuration option in [!INCLUDE ssnoversion] with [!INCLUDE tsql]. The backup compression algorithm option determines which algorithm to use to set the backup.

The backup compression algorithm configuration option is required for you to implement integrated acceleration and offloading solutions.

Prerequisites

Permissions

Execute permissions on sp_configure with no parameters or with only the first parameter are granted to all users by default. To execute sp_configure with both parameters to change a configuration option or to run the RECONFIGURE statement, a user must be granted the ALTER SETTINGS server-level permission. The ALTER SETTINGS permission is implicitly held by the sysadmin and serveradmin fixed server roles.

View the backup compression algorithm option

  1. In [!INCLUDE ssmanstudiofull-md], connect to the [!INCLUDE ssDE].

  2. From the Standard bar, select New Query.

  3. Copy and paste the following example into the query window and select Execute. This example queries the sys.configurations catalog view to determine the value for backup compression algorithm. A value of 0 means that backup compression is off, and a value of 1 means that SQL Server uses the default backup compression algorithm (MS_XPRESS). A value of 2 means that SQL Server uses the Intel&reg QAT backup compression algorithm.

    SELECT value
FROM sys.configurations
WHERE name = 'backup compression algorithm';
GO

Configure the backup compression default option

  1. In [!INCLUDE ssmanstudiofull-md], connect to the [!INCLUDE ssDE].

  2. From the Standard bar, select New Query.

  3. Copy and paste the following example into the query window and select Execute. This example shows how to use sp_configure to configure the server instance to use Intel® QAT as the default compression algorithm:

    EXECUTE sp_configure 'backup compression algorithm', 2;

RECONFIGURE;

    To change the default compression algorithm back to the default, use the following script:

    EXECUTE sp_configure 'backup compression algorithm', 1;

RECONFIGURE;

For more information, see Server configuration options.

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