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Small and medium business | Business Central, N...
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Data upgrade from Dynamic NAV 2009R2 to Business Central 21

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Currently I have database with 80GB data running on Microsoft Dynamics NAV 2009R2 and planned to perform data conversion to Business central v21.
What is total time duration for perform data migration with path: NAV 2009R2 -> NAV 2015 -> BC v14 -> BC v21 if I following upgrade steps in url below.

https://cloudblogs.microsoft.com/dynamics365/no-audience/2015/02/23/upgrading-from-microsoft-dynamics-nav-2009-r2-or-microsoft-dynamics-nav-2009-sp1-to-microsoft-dynamics-nav-2015/
https://learn.microsoft.com/en-us/dynamics365/business-central/dev-itpro/upgrade/upgrade-paths
https://learn.microsoft.com/en-us/dynamics365/business-central/dev-itpro/upgrade/upgrade-technical-upgrade-v21
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    YUN ZHU Profile Picture
    92,367 Super User 2025 Season 2 on at
    Data upgrade from Dynamic NAV 2009R2 to Business Central 21
    Hi, I think this is difficult to estimate. It has something to do with the type of data, the performance of the running server, and the amount of customized data.
    I suggest you test it with an existing database first, it's the most accurate.
    In addition, there is a similar question below, I hope it can give you some tips.
     
     
    Thanks.
    ZHU

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