# Disaster Recovery Site

The disaster recovery pattern provides recovery across data centers or cloud regions. Your disaster recovery site will have a cold standby node ready to go so that you can spin up a Nexus Repository instance and switch to this site in the event of failure at your primary site.

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## Combines With

You can use this pattern with any other desired patterns. Disaster recovery is an essential foundational pattern.

## Problems Addressed

- Data loss
- Data corruption
- Disaster recovery across data centers
- Disaster recovery across cloud regions

## Prerequisites

- External PostgreSQL database
- Large storage capacity for blob stores and database
- Must be validated and tested

## Factors to Consider

- Recovery Time Objective (RTO) can be long
- Can be expensive at scale
- Falling back must be done carefully