Proxmox Backup Server Integration with Zata.ai S3 Storage

Overview

This document describes the procedure to configure Proxmox Backup Server (PBS) to store backups on Zata.ai S3-compatible Object Storage.

The integration allows virtual machine and container backups from Proxmox environments to be securely stored in scalable object storage.

Prerequisites

Before starting the setup, ensure the following requirements are met:

• Proxmox VE installed and running

• Proxmox Backup Server installed

• Internet connectivity

• Zata.ai object storage account

• S3 bucket created

• Access Key and Secret Key generated

1. Create Object Storage Bucket

Step 1: Login to the Zata.ai dashboard.

Step 2: Navigate to:

Object Storage → Buckets

Step 3: Click Create Bucket

Step 4: Enter bucket name

Example:

proxmox-backups

Step 5: Click Create

5. Generate Access Credentials

Step 1: Navigate to:

Object Storage → Access Keys

Step 2: Click Create Key

Step 3: Copy the generated credentials:

Access Key ID
Secret Access Key

These credentials will be used to authenticate PBS with S3 storage.

1. Access Proxmox Backup Server

Open the PBS web interface in a browser:

https://<PBS-IP>:8007

Login using:

Username: root@<PBS-IP>
Password: server password

1. Configure S3 Endpoint

Step 1: Navigate to:

Configuration → S3 Endpoints

Step 2: Click Add

Step 3: Enter the following configuration:

S3 Endpoint ID : zata-reg
Endpoint       : idr01.zata.ai
Port           : 443
Region         : us-east-1
Access Key     : <Access Key>
Secret Key     : <Secret Key>
Path Style     : Enabled

Step 4: Click OK

1. Create Local Cache Directory PBS requires a local cache directory when using S3 storage.

Step 1

Open:

Administration → Shell

Step 2: Run the following command:

mkdir -p /mnt/pbs-cache

Step 3: Verify directory creation:

ls /mnt

Expected output:

pbs-cache

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1. Create Datastore

Step 1

Navigate to:

Datastore → Add

Step 2

Configure datastore settings:

Name           : zata-backups
Datastore Type : S3 (tech preview)
Local Cache    : /mnt/pbs-cache
S3 Endpoint ID : zata-reg
Bucket         : proxmox-backups
GC Schedule    : daily
Prune Schedule : daily

6. Verify Datastore Configuration

After successful configuration, the datastore will appear under:

Datastore → zata-backups

The PBS dashboard will display storage usage.

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11. Conclusion

The Proxmox Backup Server has been successfully integrated with Zata.ai S3-compatible object storage. This setup enables secure, scalable, and centralized backup storage for Proxmox environments.

Backups can now be scheduled and stored in object storage for disaster recovery and long-term retention.