Proxmox VE 3.4 - Windows Server 2012 VM hangs

how are you,


Currently I have Proxmox VE 3.4, which is installed on a Supermicro server.


That server has a virtual with the following characteristics:


- OS: Windows server 2012 std
- 4GB Memory
- Processor 2- (1-socket, 2 cores) [numa = 1] (Le put numa because if not start viartual).
- .qcow2 Local hard disk, cache = WriteThrough, size 100GB


So far so good runs smoothly, but after a few days of running this virtual crashes.


Entering the GUI Proxmox resume button is enabled and note there is no access to the virtual. It is necessary to force the detainee virtual and restart it for the operation of this recovery.


Agradecere suggestions to know why this happens ?, and how it could solve.


An additional test I have done is that the version of Proxmox VE 3.3 does not happen.


But if I lose under version software RAID, besides the Proxmox itself it does not support raid for Supermicro servers (in my tests).


Thanks in advance for your support and suggestions.


Regards.