Your network contains an Active Directory domain named contoso.com. The domain contains a server named
Server1. Server1 runs Windows Server 2012 R2 and has the Hyper-V server role installed. On Server1, you
create and start a virtual machine named VM1. VM1 is configured as shown in the following table.
You plan to create a snapshot of VM1. You need to recommend a solution to minimize the amount of disk
space used for the snapshot of VM1. What should you do before you create the snapshot?
A.
Run the Stop-VM cmdlet.
B.
Run the Convert-VHD cmdlet.
C.
Decrease the Maximum RAM
D.
Decrease the Minimum RAM.
Explanation:
What are virtual machine snapshots?
Virtual machine snapshots capture the state, data, and hardware configuration of a running virtual machine.
What are snapshots used for?
Snapshots provide a fast and easy way to revert the virtual machine to a previous state. For this reason, virtual
machine snapshots are intended mainly for use in development and test environments. Having an easy way to
revert a virtual machine can be very useful if you need to recreate a specific state or condition so that you can
troubleshoot a problem.
There are certain circumstances in which it may make sense to use snapshots in a production environment.
For example, you can use snapshots to provide a way to revert a potentially risky operation in a production
environment, such as applying an update to the software running in the virtual machine.
How are snapshots stored?
Snapshot data files are stored as .avhd files. Taking multiple snapshots can quickly consume storage space. In
the first release version of Hyper-V (KB950050) and in Hyper-V in Windows Server 2008 Service Pack 2,
snapshot, snapshot data files usually are located in the same folder as the virtual machine by default. In HyperV in Windows Server 2008 R2, the files usually are located in the same folder as the virtual hard disk. The
following exceptions affect the location of the snapshot data files: If the virtual machine was imported with
snapshots, they are stored in their own folder. If the virtual machine has no snapshots and you configure the
virtual machine snapshot setting, all snapshots you take afterwards will be stored in the folder you specify.
http://technet.microsoft.com/pt-pt/library/dd560637%28v=ws.10%29.aspx
Reducing the available RAM for the VM would reduce the size of the snapshot, what better than have the
machine turn off, not using any memory.