You might want to increase the standard disk timeout value so that a Windows guest operating system is not extensively disrupted during failover.

For Windows 2000 and Windows Server 2003 guest operating systems, you can set operating system timeout using the registry.

Before you begin, back up your Windows registry.


Select Start > Run.


In the command window, type regedit.exe, and click OK.


In the left panel hierarchy view, double-click first HKEY_LOCAL_MACHINE, then System, then CurrentControlSet, then Services, and then Disk.


Select the TimeOutValue and set the data value to x03c (hexadecimal) or 60 (decimal).

After you’ve made this change, Windows waits at least 60 seconds for delayed disk operations to complete before it generates errors.


Click OK to exit the Registry Editor.