Community docs: storage providers

This page is copied from the community documentation: See the original version of this page

A storage provider is a destination or a target for your backup data. This could be a local files or folder, a networked storage device, or a cloud storage provider. Duplicati supports many storage providers, both standard protocols and a wide range of proprietary cloud storage solutions. You can configure how each storage provider is used with its own set of options.

When configuring a backup, the storage URL parameter determines which storage provider will be used. Each storage provider has a different URL format which can be used along with the documented options below.

Local folder or drive

This backend can be used to read and write data to the local file system. You can also connect to network filesystem via SMB/NFS.

URL Format:

file://hostname/folder%20for%20backup file://\\server\folder%20for%20backup (UNC path) "C:\folder for backup" file://c:\folder%20for%20backup (Windows)file:///usr/pub/folder%20for%20backup (Linux)

In order to specify network filesystem that is not mounted into your local filesystem click on Manually type path option which allows you to specify the Folder path directly in the following format:

\\hostname_or_ip_address\folder\subfolder

For example: \\192.168.1.10\backup

You can then also specify the Username and password (if required).

Options:

  • --auth-password The password used to connect to the server. This may also be supplied as the environment variable AUTH_PASSWORD.

  • --auth-username The username used to connect to the server. This may also be supplied as the environment variable AUTH_USERNAME.

  • --alternate-destination-marker This option only works when the --alternate-target-paths option is also specified. If there are alternate paths specified, this option indicates the name of a marker file that must be present in the folder. This can be used to handle situations where an external drive changes drive letter or mount point. By ensuring that a certain file exists, it is possible to prevent writing data to an unwanted external drive. The contents of the file are never examined, only file existence.

  • --alternate-target-paths This option allows multiple targets to be specified. The primary target path is placed before the list of paths supplied with this option. Before starting the backup, each folder in the list is checked for existence and optionally the presence of the marker file supplied by --alternate-destination-marker. The first existing path that optionally contains the marker file is then used as the destination. Multiple destinations are separated with a ";". On Windows, the path may be a UNC path, and the drive letter may be substituted with an asterisk (*), eg.: " *:\backup ", which will examine all drive letters. If a username and password is supplied, the same credentials are used for all destinations.

  • --use-move-for-put When storing the file, the standard operation is to copy the file and delete the original. This sequence ensures that the operation can be retried if something goes wrong. Activating this option may cause the retry operation to fail. This option has no effect unless the --disable-streaming-transfers options is activated.

  • --force-smb-authentication If this option is set, any existing authentication against the remote share is dropped before attempting to authenticate.

FTP

This provider uses FTP servers to store backups.

URL Format:

ftp://hostname/folder

Options:

  • --ftp-passive = false If this flag is set, the FTP connection is made in passive mode, which works better with some firewalls. If the ftp-regular flag is also set, this flag is ignored.

  • --ftp-regular = true If this flag is set, the FTP connection is made in active mode. Even if the ftp-passive flag is also set, the connection will be made in active mode.

  • --auth-password The password used to connect to the server. This may also be supplied as the environment variable AUTH_PASSWORD.

  • --auth-username The username used to connect to the server. This may also be supplied as the environment variable AUTH_USERNAME.

  • --use-ssl Use this flag to communicate using Secure Socket Layer (SSL) over ftp (ftps).

  • --disable-upload-verify To protect against network failures, every upload will be attempted verified. Use this option to disable this verification to make the upload faster but less reliable.

FTP (Alternative)

This backend can read and write data to an FTP based backend using an alternative FTP client.

URL Format:

aftp://hostname/folder aftp://username:password@hostname/folder

Options:

  • --auth-password (Password) Supplies the password used to connect to the server The password used to connect to the server. This may also be supplied as the environment variable AUTH_PASSWORD.

  • --auth-username (String) Supplies the username used to connect to the server The username used to connect to the server. This may also be supplied as the environment variable AUTH_USERNAME.

  • --disable-upload-verify (Boolean) Disable upload verification. To protect against network or server failures, every upload will be attempted to be verified. Use this option to disable this verification to make the upload faster but less reliable.

  • --aftp-data-connection-type (Enumeration) Configure the FTP data connection type. If this flag is set, the FTP data connection type will be changed to the selected option. Values: AutoPassive, PASV, PASVEX,EPSV, AutoActive, PORT,EPRT Default value: AutoPassive

  • --aftp-encryption-mode (Enumeration) Configure the FTP encryption mode. If this flag is set, the FTP encryption mode will be changed to the selected option. Values: None, Implicit, Explicit Default value: None

  • --aftp-ssl-protocols (Flags) Configure the SSL policy to use when encryption is enabled. This flag controls the SSL policy to use when encryption is enabled. Values: None, Ssl2, Ssl3, Tls, Default, Tls11, Tls12 Default value: Default

OpenStack Object Storage / Swift

This backend can read and write data to Swift (OpenStack Object Storage).

URL Format:

openstack://container/folder

Options:

  • --auth-username (String) Supplies the username used to connect to the server. The username used to connect to the server. This may also be supplied as the environment variable AUTH_USERNAME.

  • --auth-password (Password) Supplies the password used to connect to the server. The password used to connect to the server. This may also be supplied as the environment variable AUTH_PASSWORD. If the password is supplied,--openstack-tenant-name must also be set.

  • --openstack-tenant-name (String) Supplies the Tenant Name used to connect to the server. The Tenant Name is commonly the paying user account name. This option must be supplied when authenticating with a password, but is not required when using an API key.

  • --openstack-apikey (Password) Supplies the API key used to connect to the server. The API key can be used to connect without supplying a password and tenant ID with some providers.

  • --openstack-authuri (String) Supplies the authentication URL. The authentication URL is used to authenticate the user and find the storage service. The URL commonly ends with "/v2.0". Known providers are:

  • --openstack-region (String) Supplies the region used for creating a container. This option is only used when creating a container, and is used to indicate where the container should be placed. Consult your provider for a list of valid regions, or leave empty for the default region.

S3 Compatible

Duplicati can use S3-compatible servers to store backups.

URL Format:

s3://bucketname/prefix

Options:

  • --aws-secret-access-key The AWS "Secret Access Key" can be obtained after logging into your AWS account, this can also be supplied through the auth-password property.

  • --aws-access-key-id The AWS "Access Key ID" can be obtained after logging into your AWS account, this can also be supplied through the auth-username property.

  • --s3-european-buckets = false This flag is only used when creating new buckets. If the flag is set, the bucket is created on a European server. This flag forces the s3-use-new-style flag. Amazon charges slightly more for European buckets.

  • --s3-use-rrs = false This flag toggles the use of the special RRS header. Files stored using RRS are more likely to disappear than those stored normally, but also costs less to store. See the full description here: http://aws.amazon.com/about-aws/whats-new/2010/05/19/announcing-amazon-s3-reduced-redundancy-storage/

  • --s3-storage-class Use this option to specify a storage class. If this option is not used, the server will choose a default storage class.

  • --s3-server-name = s3.amazonaws.com Companies other than Amazon are now supporting the S3 API, meaning that this backend can read and write data to those providers as well. Use this option to set the hostname. Currently known providers are:

    • Amazon S3: s3.amazonaws.com

    • Hosteurope: cs.hosteurope.de

    • Dunkel: dcs.dunkel.de

    • DreamHost: objects.dreamhost.com

    • dinCloud - Chicago: d3-ord.dincloud.com

    • dinCloud - Los Angeles: d3-lax.dincloud.com

    • IBM COS (S3) Public US: s3-api.us-geo.objectstorage.softlayer.net

    • Wasabi Hot Storage: s3.wasabisys.com<

  • --s3-location-constraint This option is only used when creating new buckets. Use this option to change what region the data is stored in. Amazon charges slightly more for non-US buckets. Known bucket locations:

    • (default):

    • Europe (EU): EU

    • Europe (EU, Frankfurt): eu-central-1

    • Europe (EU, Ireland): eu-west-1

    • Europe (EU, London): eu-west-2

    • US East (Northern Virginia): us-east-1

    • US East (Ohio): us-east-2

    • US West (Northern California): us-west-1

    • US West (Oregon): us-west-2

    • Canada (Central): ca-central-1

    • Asia Pacific (Mumbai): ap-south-1

    • Asia Pacific (Singapore): ap-southeast-1

    • Asia Pacific (Sydney): ap-southeast-2

    • Asia Pacific (Tokyo): ap-northeast-1

    • Asia Pacific (Seoul): ap-northeast-2

    • South America (São Paulo): sa-east-1

  • --use-ssl Use this flag to communicate using Secure Socket Layer (SSL) over http (https). Note that bucket names containing a period has problems with SSL connections.

  • --s3-client Set either to aws or minio . Then either the AWS SDK or Minio SDK will used to communicate with S3 services.

  • --auth-password The password used to connect to the server. This may also be supplied as the environment variable AUTH_PASSWORD.

  • --auth-username The username used to connect to the server. This may also be supplied as the environment variable AUTH_USERNAME.

  • --s3-ext-forcepathstyle = False Extended option ForcePathStyle

  • --s3-ext-useaccelerateendpoint = False Extended option UseAccelerateEndpoint

  • --s3-ext-signaturemethod = HmacSHA256 Extended option SignatureMethod

  • --s3-ext-signatureversion = 4 Extended option SignatureVersion

  • --s3-ext-serviceurl Extended option ServiceURL

  • --s3-ext-usehttp = False Extended option UseHttp

  • --s3-ext-authenticationregion Extended option AuthenticationRegion

  • --s3-ext-authenticationservicename = s3 Extended option AuthenticationServiceName

  • --s3-ext-maxerrorretry = 4 Extended option MaxErrorRetry

  • --s3-ext-logresponse = False Extended option LogResponse

  • --s3-ext-readentireresponse = False Extended option ReadEntireResponse

  • --s3-ext-buffersize = 8192 Extended option BufferSize

  • --s3-ext-progressupdateinterval = 102400 Extended option ProgressUpdateInterval

  • --s3-ext-resignretries = False Extended option ResignRetries

  • --s3-ext-allowautoredirect = False Extended option AllowAutoRedirect

  • --s3-ext-logmetrics = False Extended option LogMetrics

  • --s3-ext-disablelogging = False Extended option DisableLogging

  • --s3-ext-usedualstackendpoint = False Extended option UseDualstackEndpoint

  • --s3-ext-throttleretries = True Extended option ThrottleRetries

  • --s3-ext-proxyhost Extended option ProxyHost

  • --s3-ext-proxyport = 0 Extended option ProxyPort

  • --s3-ext-proxybypassonlocal = False Extended option ProxyBypassOnLocal

  • --s3-ext-maxidletime = 50000 Extended option MaxIdleTime

  • --s3-ext-connectionlimit = 50 Extended option ConnectionLimit

  • --s3-ext-usenaglealgorithm = False Extended option UseNagleAlgorithm

SFTP (SSH)

Duplicati can use SSH servers to store backups.

URL Format:

ssh://hostname/folder

Options:

  • --auth-password The password used to connect to the server. This may also be supplied as the environment variable AUTH_PASSWORD.

  • --auth-username The username used to connect to the server. This may also be supplied as the environment variable AUTH_USERNAME.

  • --ssh-fingerprint The server fingerprint used for validation of server identity. Format is eg. ssh-rsa 4096 11:22:33:44:55:66:77:88:99:00:11:22:33:44:55:66.

  • --ssh-accept-any-fingerprints To guard against man-in-the-middle attacks, the server fingerprint is verified on connection. Use this option to disable host-key fingerprint verification. You should only use this option for testing.

  • --ssh-keyfile Points to a valid OpenSSH keyfile. If the file is encrypted, the password supplied is used to decrypt the keyfile. If this option is supplied, the password is not used to authenticate. This option only works when using the managed SSH client. This key may need to be in PEM format, e.g. created with ssh-keygen -m pem, if Duplicati reports an error like openssh key type: ssh-rsa is not supported.

  • --ssh-key An url-encoded SSH private key. The private key must be prefixed with sshkey://. If the file is encrypted, the password supplied is used to decrypt the keyfile. If this option is supplied, the password is not used to authenticate. This option only works when using the managed SSH client.

  • --ssh-operation-timeout = 0 Use this option to manage the internal timeout for SSH operations. If this options is set to zero, the operations will not time out

  • --ssh-keepalive = 0 This option can be used to enable the keep-alive interval for the SSH connection. If the connection is idle, aggressive firewalls might close the connection. Using keep-alive will keep the connection open in this scenario. If this value is set to zero, the keep-alive is disabled.

WebDAV

Duplicati can use WebDAV servers to store backups.

URL Format:

webdav://hostname/folder

Options:

  • --auth-password The password used to connect to the server. This may also be supplied as the environment variable "AUTH_PASSWORD".

  • --auth-username The username used to connect to the server. This may also be supplied as the environment variable "AUTH_USERNAME".

  • --integrated-authentication If the server and client both supports integrated authentication, this option enables that authentication method. This is likely only available with windows servers and clients.

  • --force-digest-authentication Using the HTTP Digest authentication method allows the user to authenticate with the server, without sending the password in clear. However, a man-in-the-middle attack is easy, because the HTTP protocol specifies a fallback to Basic authentication, which will make the client send the password to the attacker. Using this flag, the client does not accept this, and always uses Digest authentication or fails to connect.

  • --use-ssl Use this flag to communicate using Secure Socket Layer (SSL) over http (https).

  • --debug-propfind-file To aid in debugging issues, it is possible to set a path to a file that will be overwritten with the PROPFIND response

Azure blob

This backend can read and write data to Azure blob storage. To configure this backend you must create a storage account in the Azure Portal and get an access key by going to Settings > Access keys on the storage account details page. The configuration options can either be provided as part of the URL or as separate parameters. If both are provided, the URL parameters will take precedence.

URL Format:

azure://containerName azure://storageAccountName@containerNameazure://storageAccountName:accessKey@containerName

Options:

  • --azure-account-name (String) The storage account name. The name of the Azure storage account to connect to. This parameter will be ignored if the name is specified in the URL.

  • --azure-access-key (Password) The storage account access key. The access key used to authenticate calls to the Azure storage account. This parameter will be ignored in the access key is specified in the URL.

  • --auth-username (String) The storage account name. An alternative parameter for specifying the storage account name. This parameter will be ignored if the name is specified in the URL or the --azure-account_name parameter is provided. This may also be supplied as the environment variable AUTH_USERNAME.

  • --auth-password (Password) The storage account access key. An alternative parametyr for specifying the storage account access key. This parameter will be ignored if the access key is specified in the URL or the --azure-access_key parameter is provided. This may also be supplied as the environment variable AUTH_PASSWORD.

  • --azure-blob-container-name (String) The name of the storage container. All files will be written to the container specified.

The Azure blobs don't support folders, try to use the --prefix general advanced option if you want to manage several backups in one container.

B2 Cloud Storage

This backend can read and write data to the Backblaze B2 Cloud Storage.

URL Format:

b2://bucketname/prefix

Options:

  • --b2-accountid (String) The "B2 Cloud Storage Account ID". The "B2 Cloud Storage Account ID" can be obtained after logging into your Backblaze account, this can also be supplied through the auth-username property. Aliases: --auth-password

  • --b2-applicationkey (Password) The "B2 Cloud Storage Application Key" can be obtained after logging into your Backblaze account, this can also be supplied through the auth-password property. The "B2 Cloud Storage Application Key". Aliases: --auth-username

  • --auth-password (Password) Supplies the password used to connect to the server. The password used to connect to the server. This may also be supplied as the environment variable AUTH_PASSWORD.

  • --auth-username (String) Supplies the username used to connect to the server. The username used to connect to the server. This may also be supplied as the environment variable AUTH_USERNAME.

  • --b2-create-bucket-type (String) The bucket type used when creating a bucket. By default, a private bucket is created. Use this option to set the bucket type. Refer to the B2 documentation for allowed types. Default value: allPrivate

  • --b2-page-size (Integer) The size of file-listing pages. Use this option to set the page size for listing contents of B2 buckets. A lower number means less data, but can increase the number of Class C transaction on B2. Suggested values are between 100 and 1000Default value: 500

Box.com

This backend can read and write data to Box.com.

URL Format:

box://folder/subfolder

Options:

  • --authid (Password) The authorization code. The authorization token retrieved from https://duplicati-oauth-handler.appspot.com?type=box.com

  • --box-delete-from-trash (Boolean) Force delete files. After deleting a file, it may end up in the trash folder where it will be deleted after a grace period. Use this command to force immediate removal of delete files.

Dropbox

This backend can read and write data to Dropbox.

URL Format:

dropbox://folder/subfolder

Options:

Google Cloud Storage

This backend can read and write data to Google Cloud Storage.

URL Format:

googlecloudstore://bucket/folder

Options:

  • --gcs-location (String) Specifies location option for creating a bucket. This option is only used when creating new buckets. Use this option to change what region the data is stored in. Charges vary with bucket location. Known bucket locations:

    • (default):

    • Europe: EU

    • United States: US

    • Asia: ASIA

    • Eastern Asia-Pacific: ASIA-EAST1

    • Central United States 1: US-CENTRAL1

    • Central United States 2: US-CENTRAL2

    • Eastern United States 1: US-EAST1

    • Eastern United States 2: US-EAST2

    • Eastern United States 3: US-EAST3

    • estern United States: US-WEST1

  • --gcs-storage-class (String) Specifies storage class for creating a bucket. This option is only used when creating new buckets. Use this option to change what storage type the bucket has. Charges and functionality vary with bucket storage class. Known storage classes:

    • (default):

    • Standard: STANDARD

    • Durable Reduced Availability (DRA): DURABLE_REDUCED_AVAILABILITY

    • Nearline: NEARLINE

  • --authid (Password) The authorization code. The authorization token retrieved from https://duplicati-oauth-handler.appspot.com?type=gcs

  • --gcs-project (String) Specifies project for creating a bucket. This option is only used when creating new buckets. Use this option to supply the project ID that the bucket is attached to. The project determines where usage charges are applied.

Google Drive

This backend can read and write data to Google Drive.

URL Format:

googledrive://folder/subfolder

Options:

Jottacloud

This backend can read and write data to Jottacloud using it's REST protocol.

URL Format:

jottacloud://folder/subfolder

Options:

  • --auth-password (Password) Supplies the password used to connect to the server. The password used to connect to the server. This may also be supplied as the environment variable AUTH_PASSWORD.

  • --auth-username (String) Supplies the username used to connect to the server. The username used to connect to the server. This may also be supplied as the environment variable AUTH_USERNAME.

  • --jottacloud-device (String) Supplies the backup device to use. The backup device to use. Will be created if not already exists. You can manage your devices from the backup panel in the Jottacloud web interface. When you specify a custom device you should also specify the mount point to use on this device with the jottacloud-mountpoint option.

  • --jottacloud-mountpoint (String) Supplies the mount point to use on the server. The mount point to use on the server. The default is Archive for using the built-in archive mount point. Set this option to Sync to use the built-in synchronization mount point instead, or if you have specified a custom device with option jottacloud-device you are free to name the mount point as you like.

Mega.nz

This backend can read and write data to Mega.co.nz.

URL Format:

mega://folder/subfolder

Options:

  • --auth-password (Password) Supplies the password used to connect to the server. The password used to connect to the server. This may also be supplied as the environment variable AUTH_PASSWORD.

  • --auth-username (String) Supplies the username used to connect to the server. The username used to connect to the server. This may also be supplied as the environment variable AUTH_USERNAME.

Microsoft Office 365 Group (Microsoft Graph API)

This backend can store backups in the document library associated with a Microsoft Office 365 Group.

URL Format:

msgroup://folder/subfolder

Options:

  • --authid (Password) The authorization token retrieved from https://duplicati-oauth-handler.appspot.com?type=msgroup

  • --group-email (String) Email address of the group to store data in, for example: test@example.com. Either this parameter or --group-id is required. When this parameter is specified, the group's ID is looked up automatically.

  • --group-id (String) ID of the group to store data in. Either this parameter or --group-email is required. This ID can be looked up by querying in the Microsoft Graph Explorer.

  • --fragment-size (Integer) Size of individual fragments which are uploaded separately for large files. It is recommended to be between 5-10 MiB (though a smaller value may work better on a slower or less reliable connection), and to be a multiple of 320 KiB. Default value: 10 MiB

  • --fragment-retry-count (Integer) Number of retry attempts made for each fragment before failing the overall file upload. Default value: 5

  • --fragment-retry-delay (Integer) Amount of time (in milliseconds) to wait between failures when uploading fragments. Default value: 1000

Microsoft SharePoint v2 (Microsoft Graph API)

This backend can store backups in SharePoint sites via the Microsoft Graph API.

URL Format:

sharepoint://{tenant}.sharepoint.com/{Path/To/Web}//{BaseDocLibrary}/{folder/subfolder}

A double slash, //, can optionally be used in the path to provide a hint to the location of the split between the site's base web address and the document library path.

Additionally, if the ID of the site is known (e.g., by discovering it in the Microsoft Graph Explorer), it can be explicitly specified via the --site-id parameter, and the URL can be given with just the relative path within the document library:

sharepoint://folder/subfolder

Options:

  • --authid (Password) The authorization token retrieved from https://duplicati-oauth-handler.appspot.com?type=sharepoint

  • --site-id (String) ID of the SharePoint site to store data in. This parameter is required when using the relative document library path (without specifying the SharePoint site's web address). This ID can be looked up by querying in the Microsoft Graph Explorer. When the SharePoint site's full web address is provided, it is looked up automatically.

  • --fragment-size (Integer) Size of individual fragments which are uploaded separately for large files. It is recommended to be between 5-10 MiB (though a smaller value may work better on a slower or less reliable connection), and to be a multiple of 320 KiB. Default value: 10 MiB

  • --fragment-retry-count (Integer) Number of retry attempts made for each fragment before failing the overall file upload. Default value: 5

  • --fragment-retry-delay (Integer) Amount of time (in milliseconds) to wait between failures when uploading fragments. Default value: 1000

Microsoft SharePoint (Microsoft.SharePoint.Client API)

Supports connections to a SharePoint server (including OneDrive for Business).

URL Format:

mssp://tennant.sharepoint.com/PathToWeb//BaseDocLibrary/subfoldermssp://username:password@tennant.sharepoint.com/PathToWeb//BaseDocLibrary/subfolder

Use a double slash '//' in the path to denote the web from the documents library.

Options:

  • --auth-password (Password) Supplies the password used to connect to the server. The password used to connect to the server. This may also be supplied as the environment variable AUTH_PASSWORD.

  • --auth-username (String) Supplies the username used to connect to the server. The username used to connect to the server. This may also be supplied as the environment variable AUTH_USERNAME.

  • --integrated-authentication (Boolean) Use windows integrated authentication to connect to the server. If the server and client both supports integrated authentication, this option enables that authentication method. This is likely only available with windows servers and clients.

  • --delete-to-recycler (Boolean) Move deleted files to the recycle bin. Use this option to have files moved to the recycle bin folder instead of removing them permanently when compacting or deleting backups.

  • --binary-direct-mode (Boolean) Upload files using binary direct mode. Use this option to upload files to SharePoint as a whole with BinaryDirect mode. This is the most efficient way of uploading, but can cause non-recoverable timeouts under certain conditions. Use this option only with very fast and stable internet connections. Default value: false

  • --web-timeout (Timespan) Set timeout for SharePoint web operations. Use this option to specify a custom value for timeouts of web operation when communicating with SharePoint Server. Recommended value is 180s.

  • --chunk-size (Size) Set block size for chunked uploads to SharePoint. Use this option to specify the size of each chunk when uploading to SharePoint Server. Recommended value is 4MB. Default value: 4mb

Microsoft OneDrive v2 (Microsoft Graph API)

This backend can store backups in both OneDrive and OneDrive for Business via the Microsoft Graph API.

URL Format:

onedrivev2://folder/subfolder

Options:

  • --authid (Password) The authorization token retrieved from https://duplicati-oauth-handler.appspot.com?type=onedrivev2

  • --fragment-size (Integer) Size of individual fragments which are uploaded separately for large files. It is recommended to be between 5-10 MiB (though a smaller value may work better on a slower or less reliable connection), and to be a multiple of 320 KiB. Default value: 10 MiB

  • --fragment-retry-count (Integer) Number of retry attempts made for each fragment before failing the overall file upload. Default value: 5

  • --fragment-retry-delay (Integer) Amount of time (in milliseconds) to wait between failures when uploading fragments. Default value: 1000

Microsoft OneDrive (LiveConnect API)

Duplicati can use Microsoft OneDrive to store backups.

URL Format:

onedrive://folder/subfolder

Options:

Microsoft OneDrive for Business (Microsoft.SharePoint.Client API)

Supports connections to Microsoft OneDrive for Business.

URL Format:

od4b://tennant.sharepoint.com/personal/username_domain/Documents/subfolderod4b://username:password@tennant.sharepoint.com/personal/username_domain/Documents/folder

You can use a double slash '//' in the path to denote the base path from the documents folder.

Options:

  • --auth-password (Password) Supplies the password used to connect to the server. The password used to connect to the server. This may also be supplied as the environment variable AUTH_PASSWORD.

  • --auth-username (String) Supplies the username used to connect to the server. The username used to connect to the server. This may also be supplied as the environment variable AUTH_USERNAME.

  • --integrated-authentication (Boolean) Use windows integrated authentication to connect to the server. If the server and client both supports integrated authentication, this option enables that authentication method. This is likely only available with windows servers and clients.

  • --delete-to-recycler (Boolean) Move deleted files to the recycle bin. Use this option to have files moved to the recycle bin folder instead of removing them permanently when compacting or deleting backups.

  • --binary-direct-mode (Boolean) Upload files using binary direct mode. Use this option to upload files to SharePoint as a whole with BinaryDirect mode. This is the most efficient way of uploading, but can cause non-recoverable timeouts under certain conditions. Use this option only with very fast and stable internet connections. Default value: false

  • --web-timeout (Timespan) Set timeout for SharePoint web operations. Use this option to specify a custom value for timeouts of web operation when communicating with SharePoint Server. Recommended value is 180s.

  • --chunk-size (Size) Set block size for chunked uploads to SharePoint. Use this option to specify the size of each chunk when uploading to SharePoint Server. Recommended value is 4MB. Default value: 4mb

Rackspace Cloudfiles

Supports connections to the CloudFiles backend.

URL Format:

cloudfiles://container/folder

Options:

  • --auth-password (Password) Supplies the password used to connect to the server. The password used to connect to the server. This may also be supplied as the environment variable AUTH_PASSWORD.

  • --auth-username (String) Supplies the username used to connect to the server. The username used to connect to the server. This may also be supplied as the environment variable AUTH_USERNAME.

  • --cloudfiles-username (String) Supplies the username used to authenticate with CloudFiles. Aliases: `--auth-username

  • --cloudfiles-accesskey (Password) Supplies the access key used to connect to the server. Supplies the API Access Key used to authenticate with CloudFiles. Aliases: --auth-password

  • --cloudfiles-uk-account (Boolean) Use a UK account. Duplicati will assume that the credentials given are for a US account, use this option if the account is a UK based account. Note that this is equivalent to setting --cloudfiles-authentication-url=https://lon.auth.api.rackspacecloud.com/v1.0.

  • --cloudfiles-authentication-url (String) Provide another authentication URL. CloudFiles use different servers for authentication based on where the account resides, use this option to set an alternate authentication URL. This option overrides --cloudfiles-uk-account. Default value: https://identity.api.rackspacecloud.com/auth

Rclone

This backend can read and write data to Rclone.

URL Format:

rclone://server/folder

Options:

  • --rclone-local-repository (String) Local repository for Rclone. Make sure it is configured as a local drive, as it needs access to the files generated by Duplicati. Default value: local

  • --rclone-remote-repository (String) Remote repository for Rclone. This can be any of the backends provided by Rclone. More info available on https://rclone.org/. Default value: remote

  • --rclone-remote-path (String) Path on the Remote repository. Default value: backup

  • --rclone-option (String) Options will be transferred to rclone.

  • --rclone-executable (String) Full path to the rclone executable. Only needed if it's not in your path. Default value: rclone

Sia Decentralized Cloud

This backend can read and write data to Sia.

URL Format:

sia://server/folder/BaseDocLibrary/subfolder

Options:

  • --sia-targetpath (String) Backup path. Target path, ie /backup Default value: /backup

  • --sia-password (Password) Sia password

  • --sia-redundancy (String) Minimum value is 3. Default value: 1.5

Tahoe-LAFS

Duplicati can use the TahoeLAFS to store backups.

URL Format:

tahoe://hostname:port/uri/$DIRCAP

Options:

  • --use-ssl Use this flag to communicate using Secure Socket Layer (SSL) over http (https).

Storj (ex Tardigrade) Decentralized Cloud Storage

This backend can read and write data to the Storj Decentralized Cloud Storage.

Supported options:

  • --storj-auth-method (String) The authentication method The authentication method describes which way to use to connect to the network - either via API key or via an access grant. Default value: API key

  • --storj-satellite (String) The satellite The satellite that keeps track of all metadata. Use a Storj-grade server for high-performance SLA-backed connectivity or use a community server. Or even host your own. Default value: us1.storj.io:7777

  • --storj-api-key (String) The API key The API key grants access to a specific project on your chosen satellite. Head over to the dashboard of your satellite to create one if you do not already have an API key.

  • --storj-secret (Password) The encryption passphrase The encryption passphrase is used to encrypt your data before sending it to the storj network. This passphrase can be the only secret to provide - for Storj you do not necessary need any additional encryption (from Duplicati) in place.

  • --storj-shared-access (String) The access grant An access grant contains all information in one encrypted string. You may use it instead of a satellite, API key and secret.

  • --storj-bucket (String) The bucket The bucket where the backup will reside in.

  • --storj-folder (String) The folder The folder within the bucket where the backup will reside in.

Tencent COS

Object storage (Cloud Object Storage, COS) is a distributed storage service for storing massive files provided by Tencent Cloud, which has the advantages of high scalability, low cost, reliability and security.

Supported options:

  • --cos-app-id (String) Account ID Account ID of Tencent Cloud Account

  • --cos-region (String) Specifies COS location constraints Region (Region) is the distribution area of ??the Tencent cloud hosting machine room, the object storage COS data is stored in the storage buckets of these regions. https://cloud.tencent.com/document/product/436/6224

  • --cos-secret-id (String) Secret Id Cloud API Secret Id

  • --cos-secret-key (Password) Secret Key Cloud API Secret Key

  • --cos-bucket (String) Bucket Bucket, format: BucketName-APPID

  • --cos-storage-class (String) Storage class Storage class of the object (do not use ARCHIVE types)

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