Duplicator Documentation

Documentation, Reference Materials, and Tutorials for Duplicator

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Storing Your Backup to Backblaze B2


Looking to store your backups to Backblaze B2? Our detailed guide provides easy steps to set up the whole process. It is essential to store your backup in a remote location instead of saving it locally. If a hosted machine is down, the remotely stored backup can be restored quickly on any other machine, and your WordPress website will be up.

Create Backblaze B2 Bucket

If you haven’t created a Backblaze account yet, you can sign up to the Backblaze website.

Once that’s done, you can log in the Backblaze Dashboard » My Account » Buckets and begin with clicking on Create a Bucket:

Begin with entering a unique name for your bucket, select necessary encryptions that are available in the options and click on Create a Bucket button:

With these simple steps, your Bucket is successfully created.

Connect Backblaze to Duplicator Pro

After creating the bucket in Backblaze account, you can connect it to Duplicator Pro. This way, your backup will automatically be uploaded into the cloud.

To begin with, go to Duplicator Pro » Storage » Add New:

Name the new storage location. Under Type, select Backblaze B2:

Scroll down to the Authorization section. From the Backblaze Bucket Dashboard, copy and paste the Key IDApplication KeyEndpoint, and exact name of the Bucket:

Make sure the Endpoint includes the correct region for the bucket (for example, s3.us-west-004.backblazeb2.com), and that the Application Key is scoped to this specific bucket rather than restricted to a different one. A mismatched region or an incorrectly scoped key is a common cause of connection failures.

Click Save Provider, then test the connection by clicking Test Storage. If it reports success, the setup is complete. If not, go back through the previous steps and confirm nothing was missed. If the connection still fails, see How do I fix issues with Amazon S3 or S3-compatible storage types?, which also covers Backblaze B2 since it connects through the same S3-compatible API.

About Settings

Key IDFor the purposes of terminology, the Application Key and Application Key ID are the equivalent of the Secret Access Key and Access Key ID respectively. This mapping exists because Backblaze B2 connects through an S3-compatible endpoint rather than a separate integration.
Application KeyApplication keys control access to your B2 account. You can get the master application key for your account from the B2 Cloud Storage Buckets page on the Backblaze website. For full details on the Application Key, see the documentation here.
Endpoint URLEndpoint URL for connection of B2 and Duplicator Account.
RegionThe Geographical location
Storage FolderFolder where backups will be stored. This should be unique for each website using Duplicator.
BucketS3 Bucket where you want to save the backups.
Max BackupsSpecify the number of backups to keep in ‘Storage Folder’. Setting 10 will keep the last 10 backups. Set to 0 for no limit. It is highly recommended to keep this number low. Storing too many backups can lead to space allocation issues.
ValidationValidate that the credentials and settings entered above are working.

With a Backblaze B2 storage location connected, backups now upload there automatically, giving the site a remote copy independent of the WordPress server itself.

For help connecting a different provider, see Backup to the Cloud; for connection issues, see the troubleshooting guide linked above.


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