If you come across an issue where your virtual machine becomes unresponsive, halts, or is inaccessible from the console, try the below fix from Vmware:
Windows guest operating systems that are using virtual disks on non-local datastores might experience unexpected blue screens.
This problem occurs when the responses from the storage array take longer than the guest operating system expects to wait. The default disk timeout period in Windows is too short to handle the longer delays that can occur in a SAN, NFS, or iSCSI environment, and a blue screen error is the result of exceeding this timeout.
Increase the disk timeout to 60 seconds in the Windows virtual machines by editing the Windows registry as described below:
In the registry,
- Go to HKEY_LOCAL_MACHINE/System/CurrentControlSet/Services/Disk.
- Click Edit/Add value.
- Set the value name to TimeOutValue.
- Set the data type to REG_DWORD.
- Set the data to 0x03c hex (or 60 decimal).
- Reboot the virtual machine.
Read more at: http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1014
