Canberra's Digital Archive Crisis: The Numbers Behind the Territory's Duplicate Image Problem

Across ACT government servers, university research drives and the shared digital infrastructure underpinning Canberra's public sector, duplicate images are costing real money. Internal audits at several Commonwealth and Territory agencies have found that between 30 and 45 per cent of stored image files are exact or near-exact duplicates — redundant copies accumulated over years of poor file management, staff turnover and system migrations.

The issue has sharpened in 2026 because the ACT Government's whole-of-government digital storage contract is up for renegotiation later this year, and procurement teams are under pressure to demonstrate they have cleaned house before locking in new capacity. Cloud storage is not cheap: enterprise-grade object storage with Australian data sovereignty compliance runs roughly $25 to $40 per terabyte per month depending on redundancy tier, according to publicly listed pricing from local managed-service providers operating out of the Fyshwick data centre precinct.

What the Numbers Actually Look Like

The Australian National University's digital collections team — which manages photographic and research image archives across its Acton campus — has been running a deduplication program since February 2026. Early internal figures, shared at a February seminar hosted by the Council of Australasian University Librarians, suggested ANU had identified more than 1.2 million candidate duplicate files across its humanities and social science research repositories alone. The university has not published a final figure.

At the Territory level, the ACT Government's Digital, Data and Technology Solutions directorate — headquartered in Canberra's civic precinct on London Circuit — flagged duplicate image management as a priority workstream in its 2025–26 operational plan. The directorate did not respond to questions from The Daily Canberra by deadline, but its published plan references a target of reducing unstructured data storage overhead by 20 per cent before the end of the financial year.

The University of Canberra's library and records management faculty, based at the Bruce campus in Belconnen, has for several years run graduate coursework examining exactly this kind of institutional data sprawl. Researchers there have pointed to a well-documented pattern: organisations typically see storage consumption double every three to four years without active deduplication, and image files — which are large and frequently re-saved with minor edits — are disproportionate contributors.

For context on scale, a single high-resolution government infrastructure photograph taken during light rail Stage 2 planning consultations can run to 25 megabytes. Multiply that across multiple departments sharing the same project imagery without a central asset register, and the redundancy compounds quickly. The ACT Infrastructure Delivery Office, which manages capital works documentation for projects including the Commonweath Avenue corridor, holds photographic project records across at least three separate content management systems, according to procurement records published on the ACT Government's tender portal.

Deduplication Is Straightforward — Doing It Isn't

The technical fix for duplicate images is well understood. Hash-based deduplication — software that generates a unique fingerprint for each file and flags identical copies — can process large repositories in hours. The harder problem is governance: who has authority to delete a file, especially in a government context where records legislation applies.

Under the Territory Records Act 2002, ACT public servants cannot simply purge image files without determining whether they carry a retention obligation. A photograph taken during a community consultation in Gungahlin in 2019, for instance, may need to be kept for seven years after the project's administrative closure. That means deduplication programs must be paired with metadata review — a labour-intensive process that explains why so many agencies have deferred the work.

For organisations not subject to the same legislative constraints — community groups, small businesses operating off Northbourne Avenue's commercial strip, or event photographers who supply imagery to Canberra venues — the practical advice is simpler. Free and low-cost tools including Google Photos' duplicate finder, Apple's iOS 16-era duplicate album feature, and open-source utilities such as dupeGuru can clear redundant files in an afternoon. The ACT Government's Digital.gov.au guidance pages, updated in March 2026, recommend organisations audit image libraries at least annually and establish a single source-of-truth asset register before any new storage contract is signed.

With the ACT's digital storage tender expected to go to market in the September quarter of 2026, agencies that have not started deduplication work are running short of time to affect the numbers that will matter most in that negotiation: how many terabytes they actually need.