It is important to NOTE, that DP doesn't backup nvram file. NVRAM file saves the state of the virtual machine BIOS. A situation may arise where a Linux VM with EFI configuration may not boot after DP restore. This is due to the grub boot loader. Our competition has the same issue:
https://www.veritas.com/support/en_US/article.000024404
and the workaround is explained here:
https://www.veritas.com/support/en_US/article.000075309