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Windows Server® 2008 Hyper-V™ Resource Kit by Janique Carbone Robert Larson and Microsoft Windows Virtualization Team

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Using Virtual Machine Snapshot Features

Hyper-V virtual machine snapshots allow you to capture the configuration and state of a virtual machine at any point in time and return a virtual machine to that state without noticeable interruption. When you take a snapshot of a running virtual machine, Hyper-V briefly pauses the virtual machine to create a new automatic virtual hard disk (.avhd), attaches it to the virtual machine to capture changes to any virtual machine data from that point in time, saves the processor state into a file (.vsv), and then resumes the virtual machine. Hyper-V also makes a copy of the virtual machine configuration file (.xml), and saves the contents of the virtual machine memory into a file (.bin). Snapshots can also be ...

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