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OK to change the IP Address, Subnet Mask, and Gateway of DPM 2012 Server? RRS feed

  • Question

  • We have a DPM 2012 server at a remote office, it backs up 100's of clients and several servers. We need to shut it down and relocate it (whole new subnet). The name and FQDN stay the same. The question I have is can we change the IP Address, Subnet Mask, and Gateway of the DPM 2012 server after it is in its new home and avoid having to back up everything all over again (and avoid having to re-attach the DPM clients with the DPM server)? Depending on which site you read you get different answers. My hope is that once it is back on-line clients will connect with it again and resume backups.

    HDL

    Wednesday, March 9, 2016 7:10 PM

Answers

  • Hi,

    Changing the IP Address, subnet mask and gateway on a DPM-server is supported.
    But you need to make sure that your clients and servers will be able to communicate with the DPM-server after the change has been performed.

    If you have manually installed DPM-agents you will probably remember the setdpmserver-command which configures the appropriate port in Windows Firewall on the client/server(protected computers).
    The setdpmserver-command configures the Windows firewall rules with the netbios-name of your DPM-server and if your protected computers cannot resolve the netbios-name after you have change the network-settings they will have an "Error"-status in the DPM-console. This also applies to the DPM-server; It must be able to resolve the netbios name of your protected computers.
    So once again, you need to make sure that the communication is allowed between the DPM-server subnet/network and your "protected computers"-network.

    You can expect a 10-15 minutes delay after the change has been performed until the protected computer will have the status "OK" or you can manually run the ipconfig /flushdns on your DPM-server and protected computers.

    I hope this will give you an understanding about the process of changing the network settings and please don't hesitate to ask further questions if anything is unclear.

    Kind Regards
    Markus Eliasson

    • Marked as answer by Winterthur Wednesday, March 9, 2016 9:59 PM
    Wednesday, March 9, 2016 9:52 PM

All replies

  • Hi,

    Changing the IP Address, subnet mask and gateway on a DPM-server is supported.
    But you need to make sure that your clients and servers will be able to communicate with the DPM-server after the change has been performed.

    If you have manually installed DPM-agents you will probably remember the setdpmserver-command which configures the appropriate port in Windows Firewall on the client/server(protected computers).
    The setdpmserver-command configures the Windows firewall rules with the netbios-name of your DPM-server and if your protected computers cannot resolve the netbios-name after you have change the network-settings they will have an "Error"-status in the DPM-console. This also applies to the DPM-server; It must be able to resolve the netbios name of your protected computers.
    So once again, you need to make sure that the communication is allowed between the DPM-server subnet/network and your "protected computers"-network.

    You can expect a 10-15 minutes delay after the change has been performed until the protected computer will have the status "OK" or you can manually run the ipconfig /flushdns on your DPM-server and protected computers.

    I hope this will give you an understanding about the process of changing the network settings and please don't hesitate to ask further questions if anything is unclear.

    Kind Regards
    Markus Eliasson

    • Marked as answer by Winterthur Wednesday, March 9, 2016 9:59 PM
    Wednesday, March 9, 2016 9:52 PM
  • We installed the DPM agent on the clients and servers through the DPM server's console. So, we should be good-to-go.

    HDL

    Wednesday, March 9, 2016 9:56 PM