site-migration-toolkit/docs/EN/BackUP/postgresql_disaster_recovery.md

Unified DB Backup & DR Plan

This document is based on the actual deployment of the install.svc.plus production environment. It outlines the standard operating procedures for the global PostgreSQL database backup, restoration, and Disaster Recovery (DR).

1. Production Database Architecture Checklist

Based on the production environment reconnaissance, there are currently three independently running PostgreSQL instances. When performing unified backups, data must be exported from these three instances separately.

| Instance Purpose | Runtime Mode | Listen Port/Address | Contained Business Databases | | :