As a follow on to a previous post outlining the concept and development of the online catalogue, this post from Ed Doyle explores the technical development of the catalogue which may be of interest to other archivists and repositories who are thinking of using AtoM software.
Our first version of AtoM started off on a single local office computer previously scavenged from various spare parts in the back of an office. The archivist had to create all the data that would appear on the AtoM site from scratch as there were no legacy finding aids to import, all while learning the ins and outs of the new software and communicating her experience with myself.
Our installation used Ubuntu 14.04 LTS as the operating system and AtoM 2.2 and all of its dependencies. If you are starting from scratch I would advise using whatever version that is stable (currently 2.3).