def METHOD_NAME(self, data_root_path, prefix):
    subprocess.Popen(
        "mkdir --parents %s" % (data_root_path),
        shell=True,
        stdin=None,
        stdout=None,
        stderr=None,
        close_fds=True,
    ).wait()
    subprocess.Popen(
        "chmod -R 755 %s" % (data_root_path),
        shell=True,
        stdin=None,
        stdout=None,
        stderr=None,
        close_fds=True,
    ).wait()
    self.set_channel_value("saving_mode", "AUTO_FRAME")
    self.set_channel_value("saving_directory", data_root_path)
    self.set_channel_value("saving_prefix", prefix)
    self.set_channel_value("saving_format", "HDF5BS")