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Cellar Object Storage

An object storage service that is performant, economic and easy to use.

Create your Cellar Add-on

If you are looking for an S3-compatible alternative, Clever Cloud Cellar might be the right service for you. It's a S3 clone, fully hosted in Europe. Cellar is now in version 2, called "Cellar C2". This update is now running on Ceph Object Store. Cellar is intended to help developers store any kind of files, small or large. Multiple use cases can be achieved, like assets for mobile and web apps, backups retention, archiving or even creating a data lake for big data etc. It comes with useful functions for managing files, and an ACL engine, to give you the most secure way to store your files.

Amazon S3 Compatibility

Cellar S3 is compatible with the S3 API and SDK, which means that you don’t have to change your tooling, scripts, habits… and enjoy the same ecosystem: no lock-in and easy migration.

One-Click Provisionning

Enjoying a Cellar S3 file storage system on Clever Cloud is a no-brainer. In one click, your Cellar Storage is up and ready. Check out the documentation to understand how you can use the AWS S3 SDK to use Clever Cloud Cellar

High Availability

The Cellar S3 technology offers a distributed objects management. It means more concurrent requests and better availability of your assets on your apps. So far, we can proudly display a 100% SLA. You can also host Cellar on your own infrastructure using Clever Cloud On-Premises

Large Capacities

You can store files from a few kilobytes to several terabytes. When uploading large files, connection issues may occur. To prevent this, Cellar integrates the multi-part upload: when initiating this process, you can upload objects parts independently and in any order. If the transmission fails, you can easily retry uploading these parts.


Cellar comes with powerful security features such as encryption of data in transit with TLS, ACL for Identity and Access Management, presigned URLs for uploading and downloading files with expiring signatures, server-side encryption of files via your private key, and so on.

Pre-signed URLs

No more I/O management and accesses. You can use pre-signed URLs as paths of your assets in your templating. Ideal for profile photos for example. You can also upload with pre-signed URLs directly from your browser. It’s less code, less time, less debug.


Clever Cloud Cellar enables you to manage access to buckets and objects: your bucket and files can get ACLs. For each resource access, Cellar checks the right ACL to make sure that the requester is legitimate in terms of permissions.


Cellar is built with a file version management: You can use versioning to keep multiple versions of an object in one bucket. This protects you from from unintended overwrites and deletions.

Adaptive Price Scale

Our price grid is calculated on both outbound bandwidth and storage space. The more you need, the less you pay your terabyte of bandwidth or storage.

Free Plan

Even if our pricing is interesting for large players, we did not forget those who want to try our Cellar S3; a free plan is available for your first 100 MB of files. Just like the big Cellars, but smaller.

Awesome Support

Any question? Our friendly support team is here to help you, usually responding within a few minutes, and closing tickets in 2 or 3 hours. You can access the support via chat or email, so feel free to reach out.

Check out our Blog

We write about programming, security and Clever Cloud products

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