ICT-Hotlist Topic

Back to the ICT-Hotlist...

Don't miss latest updates Follow

@WebHalla

Backup Compression (SQL Server 2012)

By Johan van Soest.

Published : 2014-01-26.

Last updated : 2017-05-02.

This topic describes the compression of SQL Server backups, including restrictions, performance trade-off of compressing backups, the configuration of backup compression, and the compression ratio.

Check the compression rates of backups.

With the modern Microsoft SQL server databases (2008 enterprise or later) it is possible to compress database, log and logshipping backups. To see the current compression ratio of the last backups use the following query.

-- ********************************************************************** 
-- * This script displays the backup and logshipping jobs that ran on 
-- * all the databases, their run time and the compression ratio.
-- *(C)Copyright 2014 - 2023 Johan van Soest http://www.vansoest.it 
-- ********************************************************************* 
SELECT database_name
      ,backup_start_date
      ,backup_size / compressed_backup_size AS 'compression'
FROM msdb..backupset
ORDER BY backup_start_date;

SQL formatted using PoorSQL
With this query result you can easily see the jobs that need to be configured for compression using WITH COMPRESSION in you BACKUP statement.
Read more how to Configure Backup Compression (SQL Server)

You may vote your opinion about this article:

Scripts and programming examples disclaimer

Unless stated otherwise, the script sources and programming examples provided are copyrighted freeware. You may modify them, as long as a reference to the original code and hyperlink to the source page is included in the modified code and documentation. However, it is not allowed to publish (copies of) scripts and programming examples on your own site, blog, vlog, or distribute them on paper or any other medium, without prior written consent.
Many of the techniques used in these scripts, including but not limited to modifying the registry or system files and settings, impose a risk of rendering the Operating System inoperable and loss of data. Make sure you have verified full backups and the associated restore software available before running any script or programming example. Use these scripts and programming examples entirely at your own risk. All liability claims against the author in relation to material or non-material losses caused by the use, misuse or non-use of the information provided, or the use of incorrect or incomplete information, are excluded. All content is subject to change and provided without obligation.