Windows Server 2016 Backup Issues/Questions

Chris Bollschweiler 41 Reputation points

I have a system running Windows Server 2016. I have recently purchased a 10TB Seagate external HDD for backup purposes. Windows Server Backup is installed onto the system, however when I try to create a schedule for automatic backups, the system will not see the drive.
When I follow the steps to make a one time backup - it does see the external drive and it does complete a successful backup. Does anyone know why the drive is not detected when trying to create a schedule for automatic backups? But it is seen when making a one time backup..

Windows Server 2016
Windows Server 2016
A Microsoft server operating system that supports enterprise-level management updated to data storage.
2,418 questions
Windows Server Backup
Windows Server Backup
Windows Server: A family of Microsoft server operating systems that support enterprise-level management, data storage, applications, and communications.Backup: A duplicate copy of a program, a disk, or data, made either for archiving purposes or for safeguarding valuable files from loss should the active copy be damaged or destroyed.
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  1. Eleven Yu (Shanghai Wicresoft Co,.Ltd.) 10,706 Reputation points Microsoft Vendor


    Thank you for posting your issue to Microsoft Q&A forum.

    Have you retried to reformat the drive to see if it fixes the problem?

    For more solutions, please kindly check below similar thread.

    External USB Drive not recognized for backup

    Best regards,

    If the Answer is helpful, please click "Accept Answer" and upvote it. Thanks.

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  2. Docs 15,396 Reputation points

    Definitive information was not found for server 2016 however these are some known problems as of 03/23/2022:

    Known issues or limitations

    Because the transition to a single-disk capacity of greater than 2 TB has occurred fairly recently, Microsoft has investigated how Windows supports these large disks.

    The results reveal several issues that apply to all versions of Windows earlier than and including Windows 7 with Service Pack 1 and Windows Server 2008 R2 with Service Pack 1.

    To this point, the following incorrect behavior is known to occur when Windows handles single-disk storage capacity of greater than 2 TB:

    The numeric capacity beyond 2 TB overflows. It results in the system being able to address only the capacity beyond 2 TB.

    For example, on a 3-TB disk, the available capacity may be only 1 TB.

    The numeric capacity beyond 2 TB is truncated. It results in no more than 2 TB of addressable space.

    For example, on a 3-TB disk, the available capacity may be only 2 TB.

    The storage device isn't detected correctly.

    In this case, it isn't displayed in either the Device Manager or Disk Management windows.

    Many storage controller manufacturers offer updated drivers that provide support for storage capacities of more than 2 TB.

    Contact your storage controller manufacturer or OEM to determine what downloadable support is available for single-disk capacities that are greater than 2 TB.


    Please remember to vote and to mark the replies as answers if they help.

    On the bottom of each post there is:

    Propose as answer = answered the question

    On the left side of each post there is /\ with a number: click = a helpful post

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  3. Chris Bollschweiler 41 Reputation points

    Thank you everyone for the comments. I have tried as suggested and made sure the drive was formatted to NTFS standards but I am unfortunately still unable to resolve the issue. It seems to detect the drive as normal when making a one-time backup. But it doesn't show in the list of available drives when creating an automatic backup schedule. I have also tried to split the drive and have 2 (5TB) partitions, but still the issue was unresolved.

    I will continue to experiment and see what I can do.

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  4. Chris Bollschweiler 41 Reputation points


    I was able to resolve my issue. I spent some time this morning going over some settings and such. The external drive came with partition style GPT by default. I formatted the drive to NTFS and changed from GPT to MBR. Once I did that, Server Backup was able to see it in its entirety too (9TB). Now I have successfully created an automatic backup schedule. Thank you everyone for being willing to assist.

  5. Docs 15,396 Reputation points

    If you're willing to test the drive for academic purposes please comment into this thread.

    Please convert from MBR to GPT and see if it still works properly.

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