Cyberduck Mountain Duck CLI

Version 10 (modified by dkocher, on Mar 28, 2016 at 2:34:26 PM) (diff)

Retries for failed file transfers

Cyberduck Help / Howto / Backblaze B2

B2 Cloud Storage. Backblaze B2 Cloud Storage works similar to Amazon S3 or Microsoft Azure, allowing you to store unlimited data in the cloud. But does it for 1/4th the cost.


Version 5.0 or later required. Please update to the latest snapshot build available.

Connecting to Backblaze B2

Obtain the login credentials Account ID and Application Key from


  • Download the B2 Connection Profile for preconfigured settings.

Refer to Profiles for documentation about connection profiles. Choose B2 Cloud Storage from the list of protocols when editing a bookmark or use the b2:// scheme when using the CLI.


Creating Buckets

Choose File → New Folder to create a new bucket in the root of the browser. Bucket names must be at least 6 characters long and only include alphanumeric characters or '-'.

File Versioning

You can view all revisions of a file in the browser by choosing View → Show Hidden Files.

Large File Uploads


Edit Bucket Type

New buckets are private by default, meaning that you need a bucket authorization token to download the files. You can allow public access to files by opening the ACL tab in the ''Info'' panel and choose Everyone → Read.

Retries for failed file transfers

The number of times a retry attempt is made upon a failure such as 503 Service Unavailable depends on the setting in Preferences → Connection → Repeat failed networking tasks → Number of retries.

Known Limitations

Rename and move files

Not supported.


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