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Fast clone/reflink - Veeam B&R migration

  • May 29, 2025
  • 5 comments
  • 62 views

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Hello everyone,

My Veeam B&R server is running on a Windows 10 VM and I’m about to migrate it to a Windows Server VM.  I’m going to take the opportunity to migrate to PostgreSQL for the backend at the same time.  I’m more comfortable with PostgreSQL than SQL Server and it will reduce our licensing costs.

I recently went through a VMWare to Hyper-V migration (thanks to Veeam it was very straightforward).

The downside is that I must maintain the legacy VMWare backups until the end of the retention period and maintain the new Hyper-V backups in parallel.  I can’t afford a reset on block tracking or whatever references are maintained for XFS reflink usage.

With a migration to a new server and new database engine, relying only on the Veeam B&R backup .bco file, is there any danger of losing changed block tracking data or resetting the reflink index, triggering a requirement for a full backup?

 

With thanks,

Simon

Best answer by Chris.Childerhose

If you are using the Configuration Backup method to migrate over then you are completely safe.  The backup will contain all the details for backups and repos so chains will continue as noted.

5 comments

Tommy O'Shea
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  • Veeam Legend
  • 359 comments
  • May 29, 2025

No, there's no risk of that. The backup files will remain untouched, and the backup chain will continue incrementally. 


coolsport00
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  • Veeam Legend
  • 4903 comments
  • May 29, 2025

Hi ​@BelongsinaMuseum -

You should be ok as Tommy shared, but doesn’t hurt to reach out to Support to make sure, and to cover anything you may have overlooked before the migration.

Good luck with the migration.


Chris.Childerhose
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  • Veeam Legend, Veeam Vanguard
  • 9587 comments
  • Answer
  • May 29, 2025

If you are using the Configuration Backup method to migrate over then you are completely safe.  The backup will contain all the details for backups and repos so chains will continue as noted.


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  • Author
  • Comes here often
  • 5 comments
  • May 29, 2025

Thanks everyone.  

Simon


Chris.Childerhose
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  • Veeam Legend, Veeam Vanguard
  • 9587 comments
  • June 2, 2025

Hi ​@BelongsinaMuseum - did you get an answer to your question and if so can you please share so we can mark an answer as “Best Answer” even if it is yours.