How vRanger restores an entire VM or individual files (FLR) from incremental or differential backup?
Using vRanger, recovery of an entire VM, multiple VMs, or individual files are simple processes. Configure a restore job to include particular VMs but exclude certain disks. vRanger’s inline data validation for restore ensures that the data in the backup matches the data in the restore.
Data streaming is used with incremental and differential restores to speed up the restoration process. During the traditional restoration process of a VM, you restore the full backup first and then restore each incremental -one at a time - starting with the oldest one. This is very time consuming and inefficient.
vRanger data streaming allows each savepoint in a set, if it has the most recent instance of a block, to transfer that block from the repository to the VM(s) specified in the restore job. With the speed of incremental restores, backup administrators may consider doing incrementally rather than doing full backups every night and saving lots of repository disk space.
The only caveat is that if any of the incremental savepoints in the set are corrupted on disk, the set becomes unusable from that savepoint onward.
Taken from vRanger Deployment Guide, "The vRanger Restore Process"