# Making large Postgres migrations practical: 1TB in 2 hours with PeerDB

DevFeed: [Making large Postgres migrations practical: 1TB in 2 hours with PeerDB](<https://devfeed.tech/articles/making-large-postgres-migrations-practical-1tb-in-2-hours-with-peerdb-5526.md>)

Original publisher: [Read original article](<https://clickhouse.com/blog/practical-postgres-migrations-at-scale-peerdb>)

Author: Amogh Bharadwaj

Published: 2026-02-19T15:26:55Z

Content type: comparison

Language: en

Sources: [ClickHouse Blog](<https://devfeed.tech/sources/clickhouse-blog.md>)

Topics: [Databases](<https://devfeed.tech/topics/databases.md>), [migration](<https://devfeed.tech/topics/migration.md>), [PostgreSQL](<https://devfeed.tech/topics/postgresql.md>), [benchmarking](<https://devfeed.tech/topics/benchmarking.md>), [Replication](<https://devfeed.tech/topics/replication.md>), [schema-evolution](<https://devfeed.tech/topics/schema-evolution.md>), [Open Source](<https://devfeed.tech/topics/open-source.md>), [AWS Database Migration Service](<https://devfeed.tech/topics/aws-database-migration-service.md>)

Tags: [benchmarking](<https://devfeed.tech/tags/benchmarking.md>), [databases](<https://devfeed.tech/tags/databases.md>), [migration](<https://devfeed.tech/tags/migration.md>), [open-source](<https://devfeed.tech/tags/open-source.md>), [postgres](<https://devfeed.tech/tags/postgres.md>), [postgresql](<https://devfeed.tech/tags/postgresql.md>), [replication](<https://devfeed.tech/tags/replication.md>), [schema-evolution](<https://devfeed.tech/tags/schema-evolution.md>)

## AI overview

This article explains how PeerDB supports large-scale Postgres-to-Postgres migrations with minimal downtime. It compares a 1TB migration using pg_dump/pg_restore, native logical replication, and PeerDB, focusing on initial-load performance, continuous change data capture, operational trade-offs, and support for complex PostgreSQL workloads.

## Source excerpt

PeerDB's Postgres to Postgres migration features enable teams to migrate their existing Postgres databases quickly and with minimal downtime.