In Microsoft Hyper-V, I have a Server 2008 R2 virtual machine that keeps losing a 2 TB virtual hard drive.

In Microsoft Hyper-V, I have a Server 2008 R2 virtual machine that keeps losing a 2 TB virtual hard drive.

The base and virtual operating systems are both Windows Server 2008 R2. All Windows updates have been installed.

I used the Hyper-V management program to create the 2 TB virtual hard drive (which holds my SQL logs).

While the Server 2008 R2 virtual server is running within the Hyper-V environment, the 2 TB virtual hard drive suddenly disappears.

What can I do to troubleshoot or fix this issue?
IT GuyNetwork EngineerAsked:
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Did you check your physical drive with chkdsk ?

Do you use SCVMM for managing your environment?
Jason WatkinsIT Project LeaderCommented:

"Hyper-V maximum VHD size is 2040 GB (8 GB short of 2 TB)."


Could this be what is causing the issue?
IT GuyNetwork EngineerAuthor Commented:
gtworekm What is SCVMM?
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System Center Virtual Machine Manager
IT GuyNetwork EngineerAuthor Commented:

Yes, I am using SCVMM (System Center Virtual Machine Manager) to manage my Hyper-V machines.
IT GuyNetwork EngineerAuthor Commented:
Discovered tha the problem was being caused by the fact that the virtual hard drives for the virtual machines were created within the virtual machines (in disk manager) even though the virtual machine files were located on the base machine.

Resolved the issue by setting up the virtual machines to access the hard drives through the Hyper-V console.

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