Hello,
We have a physical server running Windows 2012 Server Standard with the Hyper-V role enabled. One of the guest systems is a Windows 2012 Server Domain Controller. We are getting the following error message in the System Event Log:
Event ID: 32 - Source: disk - Description: The driver detected that the device \Device\Harddisk0\DR0 has its write cache enabled. Data corruption may occur.
In addition to this, there is the following event in the Directory Services Event Log:
Event ID: 1539 - Source: ActiveDirectory_DomainService - Description: Active Directory Domain Services could not disable the software-based disk write cache on the following hard disk.
Hard disk:
c:
Data might be lost during system failures.
I checked the properties of the logical disks on the host server, and the setting 'Enable write caching on the device' isnot selected on both logical drives.
The update KB2855336 is installed on the host server.
The guest server is using a virtual IDE controller for the hard drive, and the virtual hard disk is VHDX.
When I check the properties of the disk drive within the gues OS (virtual HD ATA device), the setting 'Enable write caching on the device' is selected, and there is a warning that says: "This device does not allow its write-caching setting to be changed."
I have yet to find a clear answer through the forums on if the above log entries can be disregarded, or if there is still additional work that needs to be done to ensure we do not lose AD if the host server crashes.
I am moving my customer from physical DCs to all Windows Server 2012 virtual DCs, and I need to know if I need to have a physical server running as their DC with the FSMO roles.
Any help would be appreciated.