What Is Backblaze B2?
Backblaze B2 is S3-compatible object storage designed for backups, archives, and application storage. OurClone can connect Backblaze B2 for sync, transfer, backup, and mount workflows.
Official website: https://www.backblaze.com/cloud-storage
- Good fit for cost-conscious backup and archive storage.
- Uses application keys from the Backblaze console.
- Useful as a destination for encrypted OurClone backup repositories.
What OurClone Supports for Backblaze B2
| Operation | How it works in OurClone |
|---|---|
| Sync | Keep a folder on Backblaze B2 synchronized with another cloud storage account or a local folder. OurClone compares file changes and updates only what needs to change. |
| Transfer | Copy or move files between Backblaze B2, your Mac, and other connected cloud providers. Transfers run through your local computer, so you stay in control of the data path. |
| Backup | Create an encrypted backup repository on Backblaze B2, then save snapshots of local folders. Later snapshots are incremental, so unchanged files do not need to be uploaded again. |
| Mount | Mount Backblaze B2 as a local directory in macOS or Windows, then browse and manage remote files from the operating system file manager. |
Backblaze B2 Upload and Download Limits
These limits come from the storage provider or protocol, not from OurClone. OurClone still has to respect provider file-size caps, API quotas, bandwidth rules, account storage quota, and server-side throttling.
| Upload limits | Backblaze B2 large files can range from 5 MB to 10 TB. Standard single-request files are limited to 5 GB, while the B2 web interface has a much lower 500 MB upload limit. |
| Download limits | Backblaze B2 downloads can retrieve large files, but snapshots created in the web UI are limited to 10 TB and 10 million files. Download behavior also depends on API, client, and egress policy. |
| OurClone tip | For large B2 jobs in OurClone, avoid web UI assumptions and use the connected API workflow with stable multipart transfers. |
Source: Backblaze B2 large file limits
How to Add Backblaze B2 in OurClone
Backblaze B2 connects through S3-compatible access keys in OurClone.
- Sign in to the Backblaze B2 console.
- Create or locate an Access Key ID and Secret Access Key for the bucket you want OurClone to use.
- Create an application key and enter the keyID and applicationKey in OurClone.
- Open OurClone, click Add Storage, select Backblaze B2, enter the credentials, and connect.
Sync and Transfer Workflow
After Backblaze B2 is connected, open the Migrate area in OurClone. Choose Backblaze B2 as the source or destination, select the folders you want to work with, then choose the task mode.
- Copy duplicates files while keeping the source unchanged.
- Move transfers files and removes them from the source after completion.
- Sync keeps the destination aligned with the source folder.
Task progress is visible in the Task tab, including completed, skipped, and failed files.
Backup Workflow
For backups, first create a backup repository on Backblaze B2. A repository needs a name, a storage path, and an encryption password. Keep this password safe because it is required for both future snapshots and restores.
- Open Backup and create or choose a repository on Backblaze B2.
- Open the repository and click New Backup.
- Select local folders such as
~/Documents,~/Pictures, or a project folder. - Start the snapshot. The first run uploads the full selection; later runs are incremental.
- Use Restore from a backup record when you need to recover files to a local directory.
Mount Backblaze B2 as a Local Folder
OurClone can mount Backblaze B2 as a local operating-system directory. This is useful when you want to browse cloud files in Finder or File Explorer, open files from desktop apps, or copy files with the same habits you use for local folders.
- Open the mount area in OurClone and select your connected Backblaze B2 account.
- Choose the remote path you want to expose locally.
- Pick a local mount point, then start the mount.
- When finished, unmount cleanly from OurClone before disconnecting your network or shutting down.
Best Practices for Backblaze B2
- Use a clear folder naming convention such as
/ourclone-backups,/sync, or/archive. - Confirm that your Backblaze B2 account has enough storage before running a large migration or backup.
- Run a small test sync or restore before relying on a new workflow for important files.
- For large first-time jobs, keep your computer awake and connected to a stable network.
- If authentication fails later, reconnect the account or refresh the token before restarting the task.