This document provides an overview of setting up high availability for PostgreSQL using Linux-HA, DRBD, and PostgreSQL. It describes the goals of inspiring more replication discussions and informing admins. It then covers installing and configuring Linux-HA and DRBD for data mirroring across two servers, setting up PostgreSQL to use the mirrored storage, some performance tests showing a 30% write degradation, and tips for improving performance like using writeback mode on the RAID cards.