US Patent 10298548 Efficient data replication of an encrypted file system

An apparatus for data replication is disclosed. A method and computer program product also perform the functions of the apparatus. In one embodiment, an apparatus includes a read module configured to read into a communication buffer, from a persistent storage volume, a first file that is encrypted with file-level encryption without decrypting the first file. In certain embodiment, the apparatus also includes a write module configured to write data from a second file from the communication buffer, that is received from a source device and that is encrypted with file-level encryption, to the persistent storage volume without decrypting the second file.