# Combination Active/Active High Availability + Disaster Recovery Site + Federated Repositories

If you have resiliency, scalability, and distribution needs, you can combine multiple patterns together such as in this combination of disaster recovery (DR), active/active high availability (HA), and federated repository pattern.

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In this pattern, a primary site (called "Region A" in this example) has an active/active HA setup that is federated to Region B. Each region also has a passive DR site set up in case the primary site in that region goes down.

## Combines With

This is a combination pattern comprising the following patterns:

- [Disaster Recovery Site](https://help.sonatype.com/en/disaster-recovery-site.html "Disaster Recovery Site")

- [On-Prem Active/Active High Availability](https://help.sonatype.com/en/on-prem-active-active-high-availability.html "On-Prem Active/Active High Availability") or [Cloud Active/Active High Availability](https://help.sonatype.com/en/cloud-active-active-high-availability.html "Cloud High Availability")

- [Federated Repositories](https://help.sonatype.com/en/federated-repositories.html "Federated Repositories")

## Problems Addressed

- Collaboration across regions

- Different scalability needs

- A high degree of resilience

## Available Resources

The following help topics may be helpful when implementing this pattern:

- [High Availability Deployment Options](https://help.sonatype.com/en/high-availability-deployment.html "High Availability Deployment")

- [System Requirements for High Availability Deployments](https://help.sonatype.com/en/system-requirements-for-high-availability-deployments.html "Requirements for High Availability")

- [Scaling with Proxy Nodes](https://help.sonatype.com/en/scaling-with-proxy-nodes.html "Scaling with Proxy Nodes")

- [Repository Management](https://help.sonatype.com/en/repository-management.html "Repository Management")