on vmware, you have the option to set a virtual disk as "snapshot independant" meaning that if you restore a previous state on the vm, this disk is not resored and stay as this.
This was very usefull because on all my installation of virtulised exchange, I set to store the database on a second virtual HDD that stay independant of snapshot.
The avantage is that when I roll back to a previous state of the system, the database does not change and nobody lose one mail.
I've just installed and Exchange 2010 on Hyper-V in the same way:
First virtual HDD => System
Second virtual HDD => Database of exchange
I have not found any option to set the second drive as "snapshot independant"
Does this option exist because I have not found anything?
Thanks for help