CV-NetworkTestTool.exe Results

Last post 03-22-2019, 12:59 PM by Liam. 3 replies.
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  • CV-NetworkTestTool.exe Results
    Posted: 03-22-2019, 10:20 AM

    Need some feedback regarding a huge discrepancy of test results between Windows  2008R2 and 2016 hosts. 


    Performing a fairly exhaustive test between 20 media agents in separate geographical locations. This is a feasibility study to implement WAN based backups across our available media agents (so the intent is to discover the best network paths between the media agents) 


    Media agents are configured to listen all the time as a server, over a port specific to their server, then task scheduler launches client testing sequentially to every end point in question periodically.  


    This captured 5000+ data points regarding the network conditions between media agents at various times of  the day. 


    After parsing this data we discovered:


    The 17 2008 servers; outbound rate average was .9 MB/sec

    The 2 2016 servers; their average outbound rate was 20 MB/sec


    Furthermore we upgraded a media agent from 2008R2 to Server 2016- after the upgrade the test traffic went from 1.2 MB sec to 26 MB/sec.


    We have matched the netsh TCP/IP settings between servers, matched  vNIC drivers, disabled McAfee. 

    Using a separate utility iperf- we see that the calculated bandwidth is more consistent across the baselines. 


    Is there something specific to CVNetworkTestTool.exe within windows 2008R2 that needs to be accounted for. Launch parameters/comparability settings?


    After deploying the entire testing mechanism around this utility i would rather not have to re-script around iperf or another alternative. 



  • Re: CV-NetworkTestTool.exe Results
    Posted: 03-22-2019, 11:29 AM
    • Aplynx is not online. Last active: 04-01-2020, 9:30 AM Liam
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    End of Support for Windows 2008 and Windows 2008 R2

    Because newer versions of Windows include important performance, stability, and reliability improvements, new installations on Windows 2008 and Windows 2008 R2 are not supported for the following Commvault platforms:

    • CommServe
    • MediaAgent
    • Web Console
    • Web Server
    • Workflow
    • Metrics Report
    • Search Engine and Analytics

    Support for existing deployments is now discontinued. You should plan to upgrade the operating system in the near future, to maintain supportability and to take advantage of the improvements offered with newer versions of Windows.

  • Re: CV-NetworkTestTool.exe Results
    Posted: 03-22-2019, 12:11 PM

    Wow so Server 2003 and Windows XP are on extended support but not 2008.

    So if I recreate the issue with 2003 could you give me some help?

    Is this a known problem?

    Is this just a problem with 2008? 


    The following applications and platforms are currently on Extended Support:


    Installation Package Version

    Microsoft Windows Server 2003 Editions

    Commvault 10.0, Commvault 11.0

    Microsoft Windows XP Editions with a minimum of Service Pack 3

    Commvault 10.0, Commvault 11.0

    Red Hat Enterprise Linux 5.0 (or higher) for Z-Linux

    Commvault 10.0

  • Re: CV-NetworkTestTool.exe Results
    Posted: 03-22-2019, 12:59 PM
    • Aplynx is not online. Last active: 04-01-2020, 9:30 AM Liam
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    Different plaforms. There were issues with using 2008 and R2 as media agents and the commserve so they are no longer supported as such for new installs. 

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