Hyper-V, shouldn't a dynamic disk grow dynamically?
Posted on 2014-10-15
The host is "Windows Server 2012 Standard" with Hyper-V role enabled.
I created a 50GB "dynamic VHDx" then installed Windows 2003 Server on it for testing. There is only one partition C: drive. On this partition, there is 40GB+ available space after the OS was installed.
Now I connected a USB hard drive to host, made this USB hard drive offline, then attached this USB hard drive to this VM.
Then, I am trying to copy a 70GB file from the USB hard drive to C: drive within this VM, I got an error message saying that I do not have enough space.
So I shut down the VM, "Expanded" the VHDx, Tried to increase C: drive to take the additional space, failed. I would have to create a separate partition for this additional space.
My questions are
- Since I am using Dynamic VHDx, I expect it will grow dynamically to accept a large file when there is not enough space. But it looks like I am wrong. Why?
- I guess I cannot increase C: partition because it holds OS but I should be able to increase a data partition. Is this correct?