Media Agent throughput problem

Last post 10-14-2010, 5:22 AM by Alex W. 2 replies.
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  • Media Agent throughput problem
    Posted: 10-13-2010, 10:53 AM

    I am running Simpana 8 SP5 with a single yet powerful server (2x 4 Core CPU's with 16GB Ram running 2008 R2) acting commcell, SQL Server and Media Server.  The problem I am experiencing is the network throughput over a number of hours drops from 70-80% of a 1 GB link to 4-5%.  I can improve this by continuously restarting the media service.  The throughput then resumes. 

    I am initially storing my backups on a Datadomain appliance.  Though I have tested and eliminated this as a bottleneck.

    The problem can be brought on quicker by running an AUX copy at the same time as a backup.

     

  • Re: Media Agent throughput problem
    Posted: 10-13-2010, 11:31 AM

    Alex,

    You may want to check out the MS KB article link below to see if this makes any difference:

    http://support.microsoft.com/default.aspx?scid=kb;EN-US;982383

    JW

  • Re: Media Agent throughput problem
    Posted: 10-14-2010, 5:22 AM

    Hi JW,

    Thank you for your suggestion.  I have applied the update but the issue still is present.  I have noticed that the Cmountd process memory utilisation shoots up from 20,000kb to over 150,000kb.  This coincides with a dramatic network throughput drop.  I I kill all the jobs and just run a single backup it will run extremely slowly <7gb p/h.  If i then do a stop start on the media service I will see a dramatic increase up to 50gb p/h.

    i am trying to backup around 80 servers (inc VM's) through this server.  Running 30 jobs at once.

    Would gridstor and an additional media server be a solution?

     

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