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Backblaze B2

Step 1 Configure Backblaze

Sign in with your account at https://www.backblaze.com/ or create an account. In the Backblaze B2 Cloud Storage interface, locate the "App Keys" and "Buckets" sections in the sidebar.

Backblaze Account Overview

Click on "App Keys" on the "B2 Cloud Storage" sidebar, scroll to "Your Application Keys", then click the "Add New Application Key" button.

backblaze create application key

Enter the name for the key, and ensure "Read and Write" access is granted to the new application key. Keep your Account ID (Key ID) and application key for later usage.

Note that if you generate a new Master application key, the old one will no longer work.

backblaze create application key2

If you create an Application Key and are not using the BackBlaze Master Application Key, the application key must have all privileges (Read and Write) for the targeted bucket.

Click on "Create a Bucket". Give your bucket a unique name, and choose "private".

create a bucket

create a bucket2

BackBlaze Life cycle

Please be sure that the Backblaze Lifecycle settings are set to "Keep only the last version of the file" to ensure that JetBackup can properly clear old backups according to backup retain settings and set TTLs.

Step 2 Create a backup destination

  1. Specify "Destination Type" as "Backblaze".
  2. Add a name for your destination.
  3. Fill in the Account ID (keyID), Application Key and Bucket name that you have just created.
  4. Click the "save" button.
Example configuration page for the destination:

create backblaze destination

Destination Name

A generic name for your internal ease of use, so it will be easier to recognize the backup destination roll, in case you have more than one. Max length is 40 characters.

Backup Directory

This will be our starting point when accessing this destination.
Make sure to not start with "/".
Write your path to where you want the backup to be stored.
You can leave the backup directory empty if you want that the backup will be stored in the main directory.

Free Disk Space Limit

This option checks if the destination's disk space has reached the specified limit before it executes the backup. When enabled, JetBackup will not perform the backup when the used disk space is over the specified limit.

Account ID

The identifier for the account.

Application Key

The account Application Key.


In order to create a bucket using BackBlaze console go to Creating a Bucket in the Backblaze B2 Cloud Storage Buckets.

Upload Retries

If the upload fails for some reason retry upload x times.