RHEV VM disk export and backup with best performance without east-west traffic

As per RedHat it is safest backup method for VM image  to reuse it elsewhere:
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Choose one RHEV host with minimum VMs on it and place your VM with exports (NFS) data store on it. Also, make this host an SPM host and now run below steps:
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1) Select a VM (Offline) and click on export

2) Check  Collapse snapshots to have only one VM disk. Wait to see confirmation dialogue!

3) exported VM can be accessed at NFS share as real disk image in images folder :)

All the best!