We use Zerto for our disaster recovery procedure and testing to ensure our servers and virtual machines can failover from a production environment if there's a catastrophe. We have a disaster recovery test twice a year and use Zerto to recover the environment.
We have two environments for Zerto. One is for the US, and the other is for Europe. We updated one last week to version 9.0, and the other still uses version 8.5 but I will update that today or tomorrow.