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Different but compatible version of the cluster service software

    Question

  • We have two physical servers in FCI and third server in different datacenter for DR with SQL Always On Configuredwhich is VM running same version of windows, we are getting the below alert 

    Node 'N1' which is physical established a communication session with node 'N3' which is VM and detected that it is running a different but compatible version of the cluster service software. It is recommended that the same version of the cluster service software be installed on all nodes in the cluster.

    Can we ignore this safely?

    • Moved by Tom Phillips Tuesday, December 03, 2013 9:09 PM Windows clustering question
    Tuesday, December 03, 2013 8:25 PM

Answers

  • We have two physical servers in FCI and third server in different datacenter for DR with SQL Always On Configuredwhich is VM running same version of windows, we are getting the below alert 

    Node 'N1' which is physical established a communication session with node 'N3' which is VM and detected that it is running a different but compatible version of the cluster service software. It is recommended that the same version of the cluster service software be installed on all nodes in the cluster.

    Can we ignore this safely?

    You CAN does not mean you SHOULD. Running out-of-sync is basically begging for troubles. Make sure you have updated and the same version all-around. 

    StarWind iSCSI SAN & NAS

    Sunday, December 08, 2013 11:29 AM
  • It appears that what you put in italicized text in the original post is a paraphrase of what was actually recorded in the log.  Could you provide the exact text?

    Can I assume FCI stands for something like 'Fibre Channel Interconnect'?  Not sure what else you would mean by that.  Secondly, if it does stand for that, then maybe the warning message (another reason for the exact verbiage - and number) is referring to the versions of the FC adapters.  On the physical host you would have the vendor's drivers, while in the VM you would have Hyper-V's virtualized driver.

    More clarification of your configuration is needed.


    .:|:.:|:. tim

    Monday, December 09, 2013 8:18 PM

All replies

  • That is an alert from Windows, not SQL Server.  This would be better asked in the Windows clustering forum.

    Tuesday, December 03, 2013 9:08 PM
  • Thanks will do.
    Tuesday, December 03, 2013 10:38 PM
  • The ONLY time you should be running different versions of clustering software is in the temporary situation where you are upgrading the nodes of a cluster with an operating system service pack.  And then, it should be done in a short period of time.  It is NOT recommended to run different versions of the operating system except for the time it takes to upgrade.

    So, to answer your question, no, it is not safe to ignore this message.


    .:|:.:|:. tim

    • Proposed as answer by Sean Leyne Sunday, December 08, 2013 9:04 PM
    Wednesday, December 04, 2013 1:08 AM
  • But the windows version is same on the nodes, two are physical server in FCI and then the third node is VM running the same version of Windows which is added to cluster and we have configured Always On with the third node.
    Saturday, December 07, 2013 9:56 PM
  • We have two physical servers in FCI and third server in different datacenter for DR with SQL Always On Configuredwhich is VM running same version of windows, we are getting the below alert 

    Node 'N1' which is physical established a communication session with node 'N3' which is VM and detected that it is running a different but compatible version of the cluster service software. It is recommended that the same version of the cluster service software be installed on all nodes in the cluster.

    Can we ignore this safely?

    You CAN does not mean you SHOULD. Running out-of-sync is basically begging for troubles. Make sure you have updated and the same version all-around. 

    StarWind iSCSI SAN & NAS

    Sunday, December 08, 2013 11:29 AM
  • It appears that what you put in italicized text in the original post is a paraphrase of what was actually recorded in the log.  Could you provide the exact text?

    Can I assume FCI stands for something like 'Fibre Channel Interconnect'?  Not sure what else you would mean by that.  Secondly, if it does stand for that, then maybe the warning message (another reason for the exact verbiage - and number) is referring to the versions of the FC adapters.  On the physical host you would have the vendor's drivers, while in the VM you would have Hyper-V's virtualized driver.

    More clarification of your configuration is needed.


    .:|:.:|:. tim

    Monday, December 09, 2013 8:18 PM