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Protecting 1 VM with multiple DPM servers RRS feed

  • Question

  • Any problem with protecting 1 Hyper-V VM using two separate DPM servers? For example, 1 DPM server takes folder level backups on the VM, while another DPM server takes a full VM-level snapshot? Assuming the two jobs run at separate times...

    Thinking you can associate a DPMAgent with only 1 DPM server, but wanted to solicit other thoughts. 


    Shaun

    Friday, October 25, 2019 6:04 PM

Answers

All replies

  • Hi,

    Any DPM agent that is protecting a data source on any other DPM server will prevent secondary protection from working.

    Example:

    The DPM01 server protecting local data sources (for example a Hyper-V guest virtual machine) cannot have secondary protection because it's local DPMRA service owns the local machine.

    Best regards,
    Leon


    Blog: https://thesystemcenterblog.com LinkedIn:

    • Proposed as answer by Leon Laude Monday, October 28, 2019 12:55 PM
    • Marked as answer by Shaunm001 Monday, October 28, 2019 2:40 PM
    • Unmarked as answer by Shaunm001 Friday, November 8, 2019 12:00 PM
    Friday, October 25, 2019 7:51 PM
  • Just following up on this...I went ahead and tried setting up a second DPM server and attaching the protection agent to the second server. I ran "setdpmserver.exe -dpmservername <2ndDPMServer>" on the protected server where the agent was already associated with the 1st DPM server, then attached the agent using the GUI on the 2nd DPM server. Everything appears to be working - both DPM servers see the protection agent on the target machine, both of them have protection enabled and the jobs are completing without error on both DPM servers.

    Anyone else try this or have any feedback? 


    Shaun

    Friday, November 8, 2019 12:06 PM
  • Remember that just because something works it doesn't mean it's supported.

    You are now running an unsupported scenario which means that if you run into any issues Microsoft will not provide any support.


    Blog: https://thesystemcenterblog.com LinkedIn:

    Friday, November 8, 2019 12:15 PM
  • Thanks, I appreciate the feedback. 

    Is there someplace in the DPM documentation that says this is not supported? 


    Shaun

    Friday, November 8, 2019 1:40 PM
  • I don't believe it is said in the official documentation, everything isn't written down and usually when something isn't mentioned it usually means it's not supported.

    It is a pretty standard configuration for most backup software to report only to one backup server.

    You can view a more official statement from Mike (from Microsoft) over here:
    https://social.technet.microsoft.com/Forums/windowsserver/en-US/b772cec8-ce35-4e2c-a58c-9c3fa1f50f9b/single-agent-connected-to-multiple-servers-nonhyperv?forum=dpmsetup

    You can protect DPM servers from other DPM servers, this is supported:
    Back up the DPM server


    Blog: https://thesystemcenterblog.com LinkedIn:

    • Marked as answer by Shaunm001 Friday, November 8, 2019 2:14 PM
    Friday, November 8, 2019 1:51 PM