ScotN

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11 years ago

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ScotN

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February 24th, 2016 08:00

Network Speed tests/tools on DD?

I can't find the SR or andy reference documents. Hope someone here knows. A couple of years ago we needed to verify network capacity client to Data Domain.  

The tech at the time had me run some client server network tests using a command and tool available on the datadomain but can't find the original SR or notes or documentation.

it was an in memory tool like iperf .  Ring any bells ? 

Client is CentOS 6.2 1Gb network.  TCP Tuned

DD670 Data Domain OS 5.2.5.0-414946

  • jbrooksuk

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    Posted February 24th, 2016 08:00

    Indeed it is iPerf - details in here;

    https://support.emc.com/docu61788_Data_Domain_Operating_System_Command_Reference_Guide,_5.7.pdf?language=en_US

    net iperf server (on target)

    net iperf client client ip.ip.ip.ip duration 60 interval 5 ( ON SOURCE -- ip is target Ip or hostname -- values are in seconds)

    On each end run;

    system show stats view net interval 5

    This will show you the throughput at each NIC - you can run that at both ends...

    Regards, Jonathan

  • bbeckers1

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    Posted March 23rd, 2016 14:00

    Apart from iperf which is built-in into DD and even supplies windows/unix iperf binaries, look into the ddpconnchk tool, which is a ddboost standalone tool for different platforms and for different DDOS versions. can test basic connectivity functionality of ddboost but also can perform actual write/read tests.

    You can run it with one session but also with multiple. An 8 session write/read test shows for instance:

    Cumulative Write Throughput: 1170.29 MB/s

    Cumulative Read Throughput: 910.22 MB/s


    For more info and how to download the tool see: https://support.emc.com/kb/201919


    "The ddpconnchk tool can be used for troubleshooting the following issues:

    • A media server cannot connect to a specific DDR via DDBoost protocol. (This also applies to DDBoost/RMAN plug-in can not connect to DDR)
    • A media server failed to backup to DDR via DDBoost protocol
    • DDBoost MFR (Managed File Replication) failed
    • DDBoost backup/restore performance slow
    • DDBoost MFR performance slow"