Instant Virtualization
Instant Virtualization maps data from the snapshot (stored on the secondary) to the VM. Unlike Full Virtualization, Instant Virtualization does not physically transfer data to the VM and therefore requires minimal space on the datastore, and changes made to the mapped drive do not affect the backups.
VMs created with Instant Virtualization are considered temporary, since they depend on snapshots that can expire or be deleted. Such temporary VMs may also run slower due to network communication constraints. Once a temporary machine is ready for production, it can be made available quickly by using RRP. See Migration from Virtual Snapshot Storage to Local Storage: RRP.
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