Guest OS version：windows 2010 or 2016
PV driver：126.96.36.199 or later
issue：can't active the guest OS snapshot
Whenever FC V1R6C00U1 version published, there is no windows 2012 and Windows 2016 OS snapshot supported, so in FC portal, can't do snapshot for such Guest OS, but actually, it's support such feature.
Solution is to manually modify the feature support list in VRM：
1. login VRM with putty, and command "vi /opt/galax/vrm/tomcat/webapps/ROOT/WEB-INF/classes/osConfig_Windows.Properties", to modify as below:
file show as below，column title is windows OS Feature，row title is windows OS version，modify supportMemSnapshot and SupportDiskSnapshot column in windows10 and other windows（windows 2016 use other Windows version） to true
2. restart backup VRM
3. modify the same in active VRM, and reboot active VRM, then snapshot function will active.
1. The OS version of VM deploy need to be match to the real OS version you installed, then it will actived when you change here. For Example, when deploy windows 10 Guest OS by other Windows, then you change upper file and in Windows 10 column, this guest OS will not actived.
2. PV driver version should support such feature first, need check the PV driver compatibility.