Hyper-V 2012 R2 - Fixed Size VHDX Have VMs Paused Due to Disk Space Shortage

I am running Hyper-V Server 2012 R2 (Server Core). I have an SSD boot drive and a 10 Tb Storage Space HDD (Double Pairty - RAID6) where all VMs are stored.
I have one VM setup with an expanding VHDX file. It is setup with thin provisioning for 2 Tb and about 1.5 Tb is currently used. The VM paused due to physical disk space (SS drive) being low. I turned off this VM and tried to start a different
VM that has two fixed size VHDX files (also on the SS drive). This second VM would not start either. I got the same error message, as occurred on the first VM, about the physical disk space being low. There was about 10-20 Mb of physical
space left of my SS HDD when these errors occurred.
Given the first VM is setup with an expanding VHDX that makes sense to me that at some point there may not be enough physical disk space for the VM to expand and continue to run.
But given my second VM is using a fixed VHDX it doesn't make sense to me that I cannot get this VM to start. Even if the Storage Space disk were completely full I would expect this VM to be able to start?
Thanks for any assistance you can provide.
Theokrat

Hi Theokrat,
"The HDD was setup with approximately 5 Tb storage pool as double parity."
"My first VM has a 4 Tb fixed VHDX. Thus there was only about
1 Tb free space left for the second VM."
"And for the VMs I'm asking about I set up those options to point to my HDD which is the D drive."
So, there are two VMs (the first VM has 4TB disk , the
second VM has 1TB disk )and all of the VMs' files
are stored on the 5TB HDD (the 1TB VHDx is dynamical) .
You turned off the second VM when it was paused due to lacking of disk space (before this the first VM is off ).
When you start the first VM , it still can not start and the error arose again ,right ?
If there is no any other factor led to disk usage increasing , I think the issue might be the startup memory of first VM is larger than or equal to the second VM's .
Please try to check that , if it is true , you can try to set lower memory for the first VM then start it again .
Best Regards
Elton JI
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are trying to better understand customer views on social support experience, so your participation in this
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We
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[svn:osmf:] 14036: Tweaking sample to have the parallel element use a fixed size.

Revision: 14036
Revision: 14036
Author:   [email protected]
Date:     2010-02-08 06:31:10 -0800 (Mon, 08 Feb 2010)
Log Message:
Tweaking sample to have the parallel element use a fixed size.
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We
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Hyper-V 2012 R2 - Fixed Size VHDX Have VMs Paused Due to Disk Space Shortage

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