In order to properly archive WAL files, we recommend that you provision a server dedicated to backups or file storage. Depending on the transaction volume, an active PostgreSQL database might produce thousands of these on a daily basis. At 16 MB apiece, this is not an idle concern. For instance, for a 1 TB database, we recommend at least 3 TB of storage space.
In addition, we will be using rsync as a daemon on this archive server. To install this on a Debian-based server, execute the following command as a root-level user:
sudo apt-get install rsync
Red-Hat-based systems will need this command instead:
sudo yum install rsync xinetd
