单选题A customer plans to deploy a disaster recovery site and requires a complete mirror of their production and test environments. They have an excellent relationship with the business partner who helped them with their initial deployment.  Which of the fol

A customer plans to deploy a disaster recovery site and requires a complete mirror of their production and test environments. They have an excellent relationship with the business partner who helped them with their initial deployment.  Which of the following will help with a successful implementation？（）