Synology DSM volume driver

The SynoISCSIDriver volume driver allows Synology NAS to be used for Block Storage (cinder) in OpenStack deployments. Information on OpenStack Block Storage volumes is available in the DSM Storage Manager.

System requirements

The Synology driver has the following requirements:

  • DSM version 6.0.2 or later.

  • Your Synology NAS model must support advanced file LUN, iSCSI Target, and snapshot features. Refer to the Support List for applied models.


The DSM driver is available in the OpenStack Newton release.

Supported operations

  • Create, delete, clone, attach, and detach volumes.

  • Create and delete volume snapshots.

  • Create a volume from a snapshot.

  • Copy an image to a volume.

  • Copy a volume to an image.

  • Extend a volume.

  • Get volume statistics.

Driver configuration

Edit the /etc/cinder/cinder.conf file on your volume driver host.

Synology driver uses a volume in Synology NAS as the back end of Block Storage. Every time you create a new Block Storage volume, the system will create an advanced file LUN in your Synology volume to be used for this new Block Storage volume.

The following example shows how to use different Synology NAS servers as the back end. If you want to use all volumes on your Synology NAS, add another section with the volume number to differentiate between volumes within the same Synology NAS.

enabled_backends = ds1515pV1, ds1515pV2, rs3017xsV3, others

# configuration for volume 1 in DS1515+

# configuration for volume 2 in DS1515+

# configuration for volume 1 in RS3017xs

Each section indicates the volume number and the way in which the connection is established. Below is an example of a basic configuration:


# Required settings
volume_driver = cinder.volume.drivers.synology.synology_iscsi.SynoISCSIDriver
target_protocol = iscsi
target_ip_address = DS_IP
synology_admin_port = DS_PORT
synology_username = DS_USER
synology_password = DS_PW
synology_pool_name = DS_VOLUME

# Optional settings
volume_backend_name = VOLUME_BACKEND_NAME
iscsi_secondary_ip_addresses = IP_ADDRESSES
driver_use_ssl = True
use_chap_auth = True
chap_username = CHAP_USER_NAME
chap_password = CHAP_PASSWORD

This is the port for DSM management. The default value for DSM is 5000 (HTTP) and 5001 (HTTPS). To use HTTPS connections, you must set driver_use_ssl = True.


This is the IP address of your Synology NAS.


This is the account of any DSM administrator.


This is the password for DS_USER.


This is the volume you want to use as the storage pool for the Block Storage service. The format is volume[0-9]+, and the number is the same as the volume number in DSM.


If you set driver_use_ssl as True, synology_admin_port must be an HTTPS port.

Configuration options

The Synology DSM driver supports the following configuration options: