Share via

Azure Data Box Disk VHDX Upload

AlexNW 40 Reputation points
2025-04-23T20:37:09.8733333+00:00

Hi all,

I have a question - on careful reviewing of the Data Box documentation it says "Only fixed VHDs can be uploaded to create managed disks. Dynamic VHDs, differencing VHDs, and VHDX files aren't supported." My disk file is a VHDX. I already selected "managed disks" during creation. Can I place the VHDX in the "PageBlobs" folder instead to ensure that it uploads correctly? 

Also, does the line "When VHDs with duplicate names are found, only one is converted to a managed disk with that name. The remaining VHDs are uploaded as page blobs into the staging storage account." mean that even placed in the managed disks folder the VHDX will be uploaded as page blob? Or should I even place it outside the folders to ensure it uploads as a page blob as denoted here: "Always copy the VHDs to one of the pre-created folders. VHDs placed outside of these folders or in a folder that you created are uploaded to Azure Storage accounts as page blobs instead of managed disks."?

Azure Data Box
Azure Data Box
A family of appliances and solutions for offline data transfer to Azure​.
Answer accepted by question author
  1. Keshavulu Dasari 4,925 Reputation points Microsoft External Staff Moderator
    2025-04-23T21:16:44.93+00:00

    Hi AlexNW ,

    You are correct that Azure Data Box only supports fixed VHD files for creating managed disks. Since your disk file is a VHDX, it cannot be uploaded directly as a managed disk

    To ensure your VHDX file uploads correctly, you can place it in the "PageBlobs" folder. This will upload the VHDX file as a page blob

    Regarding the handling of VHDs with duplicate names, the documentation states that only one VHD with a duplicate name will be converted to a managed disk, while the remaining VHDs will be uploaded as page blobs

    This means that even if you place a VHDX file in the managed disks folder, it will not be converted to a managed disk but will be uploaded as a page blob

    To ensure your VHDX file is uploaded as a page blob, you should place it in the "PageBlobs" folder or outside the pre-created folders

    This way, it will be uploaded to Azure Storage accounts as page blobs instead of managed disks.

    Please do not forget to "Accept the answer” and “up-vote” wherever the information provided helps you, this can be beneficial to other community members. 

    User's image

    If you have any other questions or are still running into more issues, let me know in the "comments" and I would be glad to assist you. 

    1 person found this answer helpful.

0 additional answers

Sort by: Most helpful
Most helpful Newest Oldest

Your answer

Answers can be marked as 'Accepted' by the question author and 'Recommended' by moderators, which helps users know the answer solved the author's problem.