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Hyper-V with Windows Server Essentials in a VM - adding a second physical disk to VM - now VM will not start

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Hardware previously had Windows Server Essentials 2012 running fine.

Current setup, base is Hyper-V 2012 with Windows Server Essentials in a VM, which has been installed a few weeks ago and is stable, but only on the main SSD.

I decided to try to configure so that the physical disks were available directly to WSE, hoping that the management of them would be easier.

I had one SCSI in the VM, and aside from the SSD boot disk, I was able to add 1 3TB drive, and it all works.  If I add a second 3TB drive,  the WSE VM will not start.   It tries to start, but goes back to off in a few seconds. 

I then decided to put the 3TB drives on a second virtual SCSI within the VM, to see if that was better.

No change, one drive ok, but two  and the VM will not start.

Then I booted the VM with the 1 3TB drive that worked, and then while the VM was on, I was able to add 3 more 3TB drives, and the VM stayed up.  I was able to create a storage space from the 4 drives, mirrored, thin provisioned, the standard WSE 2012 settings (I kind of wish it would give you a choice on these, but...).   Everything seemed to be working fine.

But, when the VM was stopped, it will not now restart.   I suppose I have to delete the 3 extra drives, which will cause storage pool disaster I presume.  

Seems odd that I can add them, and use them in WSE2012, but then it will not restart.   And they were on a separate virual SCSI controller from the "boot" drive.  

Any ideas?    (or let me know if this is the wrong forum... since the VM would not start, I am blaming Hyper-V...)

Thanks!

Ross


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