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Remove Skype For Business Servers from Topology (downsize) RRS feed

  • Question

  • Hello,

    Can someone please help with a procedure to remove skype for business server (lync 2015) from the production platform? The frontend pool and edge pool will still be functional for some time.

    I need to remove 2 Frontend and 1 edge from 2 pools in different sites.

    For Front-end server removal :Remove server from topology builder then publish topology. Is there any actions required on Edge servers

    Should i remove the FE from the active pool, stop cswindows service gracefully, then remove it from the topo and publish?

    For edge ( webconf,dialin,meet) the dns entries and federation should be considered. Is removing 1 edge server from topo and shuting it down the proper way of downsizing the platform?

    Wednesday, April 15, 2020 10:25 PM

Answers

  • Hi CoolToHelp!

    Q1: Can we remove 6 FE at 1 Go? Or  remove only 1 FE ( stop+remove from topo) > publish topo ?

    A1: In theory, you can remove 6 FE at 1 Go. But as you said, removing 1 FE Server at a time is recommended and much safer.

    Q2: Does publishing topo after deleting the FE automatically restart the pool?

    A2:You need to restart the pool manually by running the command “Start-CsPool”

    Q3: What actually happens when pubhishing the topology hereafter ? ( Clustermanifest file is updated automatically?)

    A3:Yes,it is.

    Best Regards,
    Jimmy Yang


    Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.

    • Marked as answer by CoolToHelp Thursday, May 28, 2020 9:26 PM
    Wednesday, May 13, 2020 10:46 AM

All replies

  • Hi CoolToHelp!

    To my knowledge, you do not need any actions on Edge Servers when you remove front end server from your frontend pool. You just need to open the topology builder and delete the frontend server what you want. For more detailed steps about how to remove front end server from a pool, you can refer to the following link:

    https://docs.microsoft.com/en-us/skypeforbusiness/migration/remove-the-front-end-server

    If you just remove one edge server from edge server pool, as you said, you need to consider the DNS entries on your edge server. You should remove the Edge Server and then publish topology.

    For more details about steps to completely remove an already existing deployment in Skype for Business Server, you can also refer to this blog:

    https://ezcloudinfo.com/2014/12/23/steps-to-completely-uninstallremove-an-already-lync-20102013-deployment/

    Note: Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there. Please make sure that you completely understand the risk before retrieving any suggestions from the above link.
     

    Best Regards,
    Jimmy Yang

    Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.
    Thursday, April 16, 2020 6:30 AM
  • Hello Jimmy,

    Thank you for sharing the above links. However none of the links provides info of how to manage the the users hosted on the FE to be removed from the Topo.

    The correct actions are as follows:

    1. Invoke-cscomputerfailover -computername "fe1" -confirm:$false

    This will move all services to the other Front End servers in the pool and takes this server offline.

    2. Remove fe1 from topology then publish topo ?

    3. Shutdown fe1

    Thanks in advance for your clarifications.

    Thursday, April 16, 2020 8:01 AM
  • Hi CoolToHelp!

    If you still need these enabled users on Skype for Business Server, we recommend you move these users from one server to another. You can also run “Move-CsUser” command to complete it. For more details, you can refer to:

    https://docs.microsoft.com/en-us/lyncserver/lync-server-2013-move-users-to-another-pool#to-move-selected-users-to-a-different-server-or-pool

    Best Regards,
    Jimmy Yang


    Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.

    Tuesday, April 21, 2020 11:05 AM
  • Hi,
    Is there any update on this case?
    Please feel free to drop us a note if there is any update.
    Have a nice day!

    Best Regards,
    Jimmy Yang


    Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.

    Sunday, April 26, 2020 7:31 AM
  • Hello Jimmy,

    Thank you for your support. The platform is in production and removing a FE server from the topology seems to have quite an impact.

    "When you remove a server from the pool in your topology and then publish the updated topology, it will cause all of the servers in the pool to restart at the same time. While the servers are restarting the pool is offline, which will interrupt service for your users connected to that pool. To prevent any interruption of service to users, plan to publish the topology change for the pool during non-business hours."

    https://docs.microsoft.com/en-us/skypeforbusiness/manage/topology/manage-front-end-servers

    According to above link simply removing server from topo & shuting down the FE server is not enough.

    I need to re-assess the operation. Can you please advise further on this pool restart ? Do we need to reset the pool?  Restart the server with CMS? Or its all done automatically? That is the pool gets back online without intervention after topology update done.

    Looking forward for your support.

    Tuesday, May 5, 2020 11:30 PM
  • Hi CoolToHelp!

    Thanks for your kindly feedback!

    Where is your master CMS install?

    What is the number of front end servers in the front end pool?

    In my understanding, if the front end server you want to remove is the master server in your front end pool and has installed CMS, you need to move the CMS to another Front End Server. To avoid this situation, we recommend you remove the front end server without the Master CMS.

    Then you can follow this document tips to remove front end server. The step are as follows:

    *Use the cmdlet “Stop-CsWindowsService -Graceful” to stop new connections to those servers

    *Open topology builder and remove front end servers

    *Publish topology

    * If you have changed the number of servers in your Front End pool in any of the following ways, then reset the pool with by typing the following cmdlet: Reset-CsPoolRegistrarState -ResetType FullReset -PoolFqdn

    * Restart the pool by typing the following cmdlet “Start-CsPool”

    To be notice that you don’t need to move users if you still use this front end pool.

    Besides, we recommend that all your Enterprise Edition Front End Pools include at least three Front End Serves. It means that 85% of the servers are need to up and running. If fewer servers are running, the services might be stuck in the starting state and the pool might not start.

    Best Regards,
    Jimmy Yang


    Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.


    Wednesday, May 6, 2020 9:40 AM
  • Hello Jimmy,

    Thank you for support.

    There are 3 pools, and each pool with 8,10 and 11 FE servers.

    CMS is in pool with 11 servers from which i would like to remove 6 and keep 5 FE servers running.

    Each pool have mirrored backend servers. Yes, the FE with CMS will not be removed.

    Can we remove 6 FE at 1 Go? Or  remove only 1 FE ( stop+remove from topo) > publish topo ?

    Not to lose pool quorum any 5 of first 9 must be running. So not sure if removing 2 FE at 1 go from the topo and publishing it is a too risky operation. Removing 1 FE server at a time could be safer and recommended?!

    Does publishing topo after deleting the FE automatically restart the pool?

    What actually happens when pubhishing the topology hereafter ? ( Clustermanifest file is updated automatically?)

    Am not sure why Reset pool coz publishing topo should nor stop the pool and restart it automatically while updating the systems.

    Thanks inadvance for your valuable inputs.

    Thursday, May 7, 2020 11:33 PM
  • Hi CoolToHelp!

    Q1: Can we remove 6 FE at 1 Go? Or  remove only 1 FE ( stop+remove from topo) > publish topo ?

    A1: In theory, you can remove 6 FE at 1 Go. But as you said, removing 1 FE Server at a time is recommended and much safer.

    Q2: Does publishing topo after deleting the FE automatically restart the pool?

    A2:You need to restart the pool manually by running the command “Start-CsPool”

    Q3: What actually happens when pubhishing the topology hereafter ? ( Clustermanifest file is updated automatically?)

    A3:Yes,it is.

    Best Regards,
    Jimmy Yang


    Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.

    • Marked as answer by CoolToHelp Thursday, May 28, 2020 9:26 PM
    Wednesday, May 13, 2020 10:46 AM
  • Massive thanks Jimmy for your support!

    Much appreciated. ;)

    Thursday, May 28, 2020 9:29 PM
  • You're welcome!

    Best Regards,
    Jimmy Yang


    Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.

    Friday, May 29, 2020 1:18 AM