What Storage Destinations Does Duplicati Support?

Updated

Duplicati supports cloud object storage, remote protocols, and local hardware, so you can point backups at storage you already own or pay for. Based on the site's own description, supported destinations include AWS S3, Azure Blob Storage, Wasabi Hot Storage, Backblaze B2, WebDAV, SFTP, SMB, and local drives or NAS. The key condition: Duplicati is "bring your own storage" (BYOS), so you supply the storage account and Duplicati writes encrypted backups to it.

Cloud object storage

Duplicati's site names these cloud targets directly:

  • AWS S3
  • Azure Blob Storage
  • Wasabi Hot Storage
  • Backblaze B2

These are object-storage services, which fits Duplicati's model of writing encrypted backup blocks to a remote bucket. Because you bring your own account, the storage cost and bandwidth terms come from the provider you choose, not from Duplicati.

Remote protocols

For servers, NAS devices, and self-hosted storage, Duplicati lists:

  • WebDAV
  • SFTP
  • SMB

These cover the common cases: WebDAV for web-accessible storage endpoints, SFTP for secure file transfer to a remote host, and SMB for network shares on a local network. The site specifically describes local-to-local backups going to network-attached storage "via SFTP or SMB," keeping traffic on the internal network.

Local hardware and NAS

Duplicati supports backing up to local hardware and network-attached storage. The site describes:

  • Local to local: secure local machine backups to NAS via SFTP or SMB.
  • On-prem to cloud: local servers, NAS, desktops, and laptops backed up directly to AWS S3, Azure Blob Storage, Wasabi, or Backblaze B2.
  • Cloud to on-prem: Microsoft 365, Google Workspace, or S3 buckets backed up to an on-prem SAN or private S3 cluster, which the site frames as a way to meet data sovereignty requirements.

What "bring your own storage" means for you

The site states there are no added fees for storage and no limits on bandwidth from Duplicati's side, because you choose the provider. In practice:

Your situation Destination to consider
You already pay for cloud storage AWS S3, Azure Blob Storage, Wasabi, or Backblaze B2
You run a NAS or file server SFTP or SMB to that device
You need data to stay on-premises Local hardware, on-prem SAN, or a private S3 cluster
You use a web-accessible storage endpoint WebDAV

How to confirm a destination works for you

  1. Identify where your data should live (cloud bucket, NAS share, or local disk).
  2. Check that the destination matches one of the supported types above.
  3. Have the connection details ready for that destination (for example, bucket credentials for S3, or host and credentials for SFTP/SMB).
  4. Configure the backup job to write to that destination; Duplicati encrypts the data before it leaves your machine.

The practical takeaway: if your storage speaks S3, Azure Blob, WebDAV, SFTP, or SMB, or is a local drive or NAS, Duplicati can likely use it as a backup target. For the current list of supported backends and any provider-specific setup notes, check the Duplicati documentation and downloads pages.