Windows Defrag task on SQL VM with SAN

• sqld-_-ba

  SSCarpal Tunnel

  Points: 4365

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  March 27, 2015 at 10:17 pm

  #296344

  We recently virtualized a physical Win 2008,SQL 2005 server to VMWare with HP SAN backend, using SSD for 1st tier storage

  The default Windows Defrag scheduled task (system32\defrag.exe -c) is scheduled to run each night.

  We also have database index maintenance running.

  1. Will defrag even work on open/locked files like .mdf ? Or does SQL need to be stopped ?

  2. Is defrag required on SQL servers ? Is defrag useful with a SSD backend ?

  3. Do any of your SQL servers have defrag task running ? Does it cause any issues?

• Eirikur Eiriksson

  SSC Guru

  Points: 182882

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  March 29, 2015 at 2:09 am

  #1787153

  Have a look at this article: Solving SQL Server Database Physical File Fragmentation[/url]

  😎