One or more techniques and/or computing devices are provided for secure data replication. For example, a first storage controller may host first storage within which storage resources (e.g., files, logical unit numbers (LUNs), volumes, etc.) are stored. The first storage controller may establish an access policy with a001 second storage controller to which data is to be replicated from the first storage. The access policy may define an authentication mechanism for the first storage controller to authenticate the second storage controller, an authorization mechanism specifying a type of access that the second storage controller has for a storage resource, and an access control mechanism specifying how the second storage controller's access to data of the storage resource is to be controlled. In this way, data replication requests may be authenticated and authorized so that data may be provided, according to the access control mechanism, in a secure manner.