From: Adelino Silva [mailto:adelino.j.silva@googlemail.com] > What is the advantage to use archive_mode = always in a slave server compared > to archive_mode = on (shared WAL archive) ? > > I only see duplication of Wal files, what is the purpose of this feature ?
This also saves you the network bandwidth by not sending the WAL archive from the primary to the standby(s). The network bandwidth can be costly between remote regions for disaster recovery.