src/Ovh/Dedicated/Server/ServerClient.php
public function createBackupFTPAccess($domain, $ipBlock)
	{
	//	$domain = (string)$domain;
	//	$ipBlock= (string)$ipBlock;
		if (!$domain)
			throw new BadMethodCallException('Parameter $domain is missing.');
		if (!$ipBlock)
			throw new BadMethodCallException('Parameter $ipBlock is missing.');
		$payload = array(
			'ftp' => (1==1),  // why does this want a class specific variant of $true??
			'ipBlock' => $ipBlock,
			'nfs' => (1==0),
			'cifs' => (1==0)
		 );
		try {
            $r = $this->post('dedicated/server/' . $domain . '/features/backupFTP/access', array('Content-Type' => 'application/json;charset=UTF-8'), json_encode($payload))->send();
        } catch (\Exception $e) {
            throw new ServerException($e->getMessage(), $e->getCode(), $e);
        }
        return $r->getBody(true);
	}
public function createBackupFTPAccess($domain, $ipBlock)
	{
	//	$domain = (string)$domain;
	//	$ipBlock= (string)$ipBlock;
		if (!$domain)
			throw new BadMethodCallException('Parameter $domain is missing.');
		if (!$ipBlock)
			throw new BadMethodCallException('Parameter $ipBlock is missing.');
		$payload = array(
			'ftp' => (1==1),  // why does this want a class specific variant of $true??
			'ipBlock' => $ipBlock,
			'nfs' => (1==0),
			'cifs' => (1==0)
		 );
		try {
            $r = $this->post('dedicated/server/' . $domain . '/features/backupFTP/access', array('Content-Type' => 'application/json;charset=UTF-8'), json_encode($payload))->send();
        } catch (\Exception $e) {
            throw new ServerException($e->getMessage(), $e->getCode(), $e);
        }
        return $r->getBody(true);
	}
Creatge backupFTP ACL

@param 	$domain -> Server that this applies to
@param	$ipBlock -> ipblock that is being granted access

this requires that one type of access be set - and since this is called backuipFTP - I chose the FTP as default
a second call to set actual desired ACL will be required to set acl to what is desired

@return 	object result set

throws BadMethodCallException if server is not defined
usual handling for 400/404 errors