Permissions required for the account that will deploy D2D remotely from the Central Protection Manager
The account being used to install D2D should be member of the local administrators group .
From the Central Protection Manager, the account being used to remotely deploy D2D should be a member of the Local Administrators group on that respective node.
Refer the Installation Considerations for CA ARCserve D2D from the link below:
Review the Restore Prerequisites and Considerations involving Exchange Server