Working with backup sets : VMware VADP backup sets (Windows or Linux) : Before you begin
 
Before you begin
Before creating a VMware VADP backup set, you must ensure that the following requirements are met as applicable:
If an ESXi host is added with its DNS name to the vCenter Server, the DS-Client machine must be able to execute a name resolution for that ESXi host to back up or restore the virtual machines.
If you plan to enable the Local DS-VDR option, you must have configured the Local DS-VDR Tool for this DS-Client. For more information, see “Configuring the Local DS-VDR Tool”.