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9780735697744 Introducing Windows Server 2016 pdf

Production checkpoints 
Windows Server 2016 introduces a new concept of taking checkpoints for production VMs; that is, 
production checkpoints. A checkpoint is a point-in-time capture of the state of a VM, which gives you 
the ability to revert the VM to an earlier state. Before Windows Server 2016, the use of checkpoints 
focused on test and development scenarios but was not recommended for use in production 
environments. 
Production checkpoints deliver the same kind of experience as in Windows Server 2012 R2, but they 
are now fully supported for production environments for two main reasons: 

The Volume Snapshot Service (VSS) is now used instead of saved state to create checkpoints. 

Restoring a checkpoint is just like restoring a system backup. 
Note VSS is used for creating production checkpoints only on Windows VMs; Linux VMs do this by 
flushing their file system buffers to create a file system–consistent checkpoint. 
If you want to create checkpoints by using saved-state technology, you can still use standard 
checkpoints for your VM. However, the default for new VMs will be to create production 
checkpoints with a fallback to standard checkpoints. 
In certain scenarios, an administrator might need to disable checkpoints for specific VMs for 
operational reasons. This is now feasible in Windows Server 2016, which gives you the ability to turn 
on or turn off production checkpoints on individual VMs. This option provides flexibility and gives 
Hyper-V administrators the means to manage and optimize their resources effectively. 
Figure 2-17 demonstrates how you can use VM settings to turn on or turn off checkpoints for the 
VM and allow production checkpoints. By default, the Enable Checkpoints option is selected and is 
configured to allow production checkpoints and to create standard checkpoints if it is not possible 
to create a production checkpoint. 


26 
CHAPTER 2 | Software-defined datacenter 
Figure 2-17:
Configuring production checkpoints on a VM 
To create a new production checkpoint for a VM, turn on checkpoints for that VM, right-click the VM 
in Hyper-V Manager, and then, on the shortcut menu that appears, click Checkpoint, as shown in 
Figure 2-18. 

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