May 28, 2024
031020 1729 HowtoFixSto8 - How to Fix Storage Space Direct Virtual Disk Detached after Server Reboot
Today, my customer is call me and said their VMs are disappear at Windows Server 2019 Hyper-V host after reboot, I noticed the virtual disk detached, the VMs are up and running after I re-attach the virtual disk, but the issue was not be fixed because when I try to reboot the Windows Server 2019 Hyper-V host and the virtual disk detached again.

031020 1729 HowtoFixSto1 - How to Fix Storage Space Direct Virtual Disk Detached after Server Reboot

Today, my customer is call me and said their VMs are disappear at Windows Server 2019 Hyper-V host after reboot, I noticed the virtual disk detached, the VMs are up and running after I re-attach the virtual disk, but the issue was not be fixed because when I try to reboot the Windows Server 2019 Hyper-V host and the virtual disk detached again.

031020 1729 HowtoFixSto2 - How to Fix Storage Space Direct Virtual Disk Detached after Server Reboot

I am going to show you how to fix this issue by following steps.

  1. Login to the Windows Server 2019 Hyper-V host server.
  2. Open Server Manager select File and Storage Services.

    031020 1729 HowtoFixSto3 - How to Fix Storage Space Direct Virtual Disk Detached after Server Reboot

  3. On the File and Storage Services page, select Storage Pools.

    031020 1729 HowtoFixSto4 - How to Fix Storage Space Direct Virtual Disk Detached after Server Reboot

  4. on the Storage Pools, select the storage Pool, right-click the virtual disk which detached and click Properties.

    031020 1729 HowtoFixSto5 - How to Fix Storage Space Direct Virtual Disk Detached after Server Reboot

  5. on the Properties page, expend Details, select IsManualAttach from the virtual disk Property.

    031020 1729 HowtoFixSto6 - How to Fix Storage Space Direct Virtual Disk Detached after Server Reboot

  6. You will see the Value is True, this is the root cause of virtual disk detached after server reboot.

    031020 1729 HowtoFixSto7 - How to Fix Storage Space Direct Virtual Disk Detached after Server Reboot

  7. We can use PowerShell cmdlet to change the Value from True to False.
    
    
    Get-VirtualDisk | Where-Object {$_.IsManualAttach –EQ  $True} | Set-VirtualDisk –IsManualAttach $False
    
    
    

    031020 1729 HowtoFixSto8 - How to Fix Storage Space Direct Virtual Disk Detached after Server Reboot

  8. The virtual disk attaches atomically. And the virtual disk detached issue won’t happen after server reboot.

    031020 1729 HowtoFixSto9 - How to Fix Storage Space Direct Virtual Disk Detached after Server Reboot

  9. Open Hyper-V Manager, all VMs are up and running again.

    031020 1729 HowtoFixSto10 - How to Fix Storage Space Direct Virtual Disk Detached after Server Reboot

Hope you enjoy this post.

Cary Sun

Twitter: @SifuSun

ca16fbd3199de5f66b829b87082fb970?s=80&d=retro&r=g - How to Fix Storage Space Direct Virtual Disk Detached after Server Reboot

Author: Cary Sun

Cary Sun has a wealth of knowledge and expertise in data center and deployment solutions. As a Principal Consultant, he likely works closely with clients to help them design, implement, and manage their data center infrastructure and deployment strategies.
With his background in data center solutions, Cary Sun may have experience in server and storage virtualization, network design and optimization, backup and disaster recovery planning, and security and compliance management. He holds CISCO CERTIFIED INTERNETWORK EXPERT (CCIE No.4531) from 1999. Cary is also a Microsoft Most Valuable Professional (MVP), Microsoft Azure MVP, Veeam Vanguard and Cisco Champion. He is a published author with several titles, including blogs on Checkyourlogs.net, and the author of many books.
Cary is a very active blogger at checkyourlogs.net and is permanently available online for questions from the community. His passion for technology is contagious, improving everyone around him at what they do.

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