@classmethod
def backend_disable(cls, backend):
    """ Disable a backend for a server """
    server = cls.backend_list(backend)
    oper = cls.call('hosting.rproxy.server.disable', server[0]['id'])
    cls.echo('Desactivating backend on server %s' % server[0]['ip'])
    cls.display_progress(oper)
    cls.echo('Backend desactivated')
    return oper
