Backing up SSAS Database; Insufficient space

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Backing up SSAS Database; Insufficient space

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SQLKnowItAll

Posted Wednesday, November 07, 2012 6:36 AM

SSCrazy

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Last Login: Tuesday, May 14, 2013 1:40 PM
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Does anyone know if SQL Server takes into account the size of the backup file it is overwriting in the case of backing up an SSAS database?

Scenario:

SSAS Version: 10.50.2811
Existing backup: SSASDatabase.abf 65.2GB
Free Space on Drive: 99GB
XML:

<Backup xmlns="http://schemas.microsoft.com/analysisservices/2003/engine">
  <Object>
    <DatabaseID>SSASDatabase</DatabaseID>
  </Object>
  <File>\\Share\Folder\SSASDatabase.abf</File>
  <AllowOverwrite>true</AllowOverwrite>
</Backup>

This fails with an insufficient space error. To make the job run successfully, I delete the existing backup and run the job from this step. The initial file size before compression now is 117GB! More than double the final result of 65.2GB.

Question 1: Is the XML correct for this? (a developer wrote this and I am not too familiar with doing these backups)
Question 2: Does it not take into account the space of the file being overwritten as free space? This seems probable, given the error. However, I would like to know if this can be verified. (I've googled, but my google foo on this is lacking)

Any help would be appreciated!

Thanks,

Jared
SQL Know-It-All

How to post data/code on a forum to get the best help - Jeff Moden

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