Restore Celera NDMP Backup into Unity or Isilon

Due to a Celerra NSX4 EOS june/2017 I will have to replace the box. I foresee these options, can someone help me to understand how viable they are? I have around 2PB of data on EMC Networker.

Replace with EMC Unity - Is Unity NDMP 100% compatible with Celerra NDMP so I can restore data from backups?

Use Volumes from Isilon - Is isilon NDMP compatible with Celerra NDMP backups?

Use Celerra Simulator - Can I use Celerra simulator to keep my restores? Is that supported?

Any help would be very much appreciated.

Thanks!