DPM Protected files moving from one host to another - what's the best way to configure DPM? RRS feed

  • Question

  • I have a file server (Server A) with 5TB of data backed up by DPM. 

    I'm moving those files to a new server (Server B) and want to continue to back up using DPM.

    What is the best way to account for this change in DPM? My plan was to stop protection on Server A then enable protection on Server B. I feel like this will delete the DPM replica for Server A, free up 5TB of storage, and then create a new 5TB replica for Server B once protection has been enabled there. 

    My question here is - will DPM view Server B as a completely new server and then try to sync all 5TB from Server B up to Azure Recovery Services Vault? Or will it see that these files are already stored in the cloud (having come from Server A) and avoid creating extra copies (i.e., deduplication)? This is what I'm trying to avoid. 


    Saturday, February 23, 2019 2:14 PM

All replies

  • Hello Shaun!

    DPM will not know if the data is already backed up, ServerB will be a completely new server for DPM, so DPM will create new replicas unfortunately.

    The way to do this is as you said, stop protection of ServerA and then start protecting ServerB.

    You can follow the procedure below:

    1. Stop protection on ServerA.

    2. Add ServerB to the protection.

    3. Wait for DPM to creat a full backup of ServerB.

    4. Once there is a full backup on ServerB, you can safely remove the inactive replicate data from ServerA (if you don't need history of the data).

    Best regards,

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    Saturday, February 23, 2019 3:17 PM
  • I have a ticket open with Azure support, they say I can give the new server the same name as the old server and it will resume backups without creating duplicate data. I will post an update once complete. 


    Tuesday, February 26, 2019 4:20 PM
  • Yes that should work, it didn't cross my mind as you mentioned about moving to another server.

    DPM uses the computer name as a unique identifier for replicas, recovery points, DPM database entries, reporting database entries, so yes if you can use use the same server name, then it's possible for the DPM server to resume. 

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    Tuesday, February 26, 2019 4:51 PM
  • Hi,

    Just checking to see if you have any update?

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    Friday, March 8, 2019 12:04 AM