The Numbers Behind Canberra's Duplicate Image Problem: How Much Government Storage Is Being Wasted?

Canberra's public sector is carrying a hidden digital weight. Across federal agencies concentrated in the Barton and Parkes precincts, IT asset managers are quietly confronting a problem that has compounded for more than a decade: vast repositories of duplicate images clogging government storage infrastructure, duplicated across shared drives, content management systems, and legacy databases that were never properly decommissioned.

The push to address this is accelerating in mid-2026. The Australian Government's Digital Transformation Agency, based on Mort Street in the city, has flagged duplicate data remediation as a priority under the broader Data and Digital Government Strategy. The strategy set a 2030 target for agencies to demonstrate active data quality programs — and image deduplication sits squarely in that frame.

What the Data Actually Looks Like

Enterprise storage analysts who work with Commonwealth clients — without naming specific agencies, given confidentiality arrangements — have described environments where between 25 and 40 percent of all image files stored are direct or near-duplicate copies. That means, conservatively, that for every four images an agency holds, one is a redundant copy. In large portfolios like Services Australia, which operates its national support infrastructure partly from offices in Greenway and Tuggeranong, the cumulative storage footprint runs into petabytes.

Cloud storage costs inside the Australian Government's whole-of-government procurement arrangements — governed through the Digital Marketplace — are not publicly itemised by department. But hyperscaler pricing in the Australian east-coast region runs at roughly $0.025 per gigabyte per month for standard object storage. Even a conservative estimate of 10 terabytes of duplicate image data sitting in a single mid-sized agency translates to roughly $3,000 wasted per year in raw storage alone — before factoring in retrieval costs, data transfer charges, backup duplication, and the staff time spent managing assets that should not exist.

The Australian National University's Research Data Commons program, which operates out of the Acton campus, last year published internal guidance noting that unmanaged image duplication was among the top three contributors to bloated research data collections. The university did not release figures publicly, but the guidance recommended a formal deduplication audit every 18 months for any collection exceeding 500 gigabytes.

Deduplication in Practice — and What Canberra Agencies Are Doing

Duplicate image replacement — the process of identifying, cataloguing, and substituting identical or near-identical image files with a single canonical version — is not new technology. Tools using perceptual hashing, checksum matching, and machine-learning-assisted visual similarity have existed commercially since at least 2015. What has changed is the scale of the problem. Rapid migration to cloud platforms between 2020 and 2023, driven by the Australian Signals Directorate's Cloud Security Policy requirements, meant many agencies moved legacy file systems wholesale, duplicates and all, rather than cleaning them first.

The University of Canberra's Institute for Governance on Kirinari Street in Bruce has examined digital asset management practices in public sector contexts. Researchers there have pointed to procurement cycle pressure — agencies buying new content systems without retiring old ones — as a structural driver of duplication growth.

For practical purposes, the remediation path is straightforward. Agencies are advised to run a baseline hash-based scan to identify exact duplicates first, because those can be replaced automatically with near-zero risk. Near-duplicates — images that are visually similar but technically distinct, such as slightly different crops of the same photograph — require human review, which is where costs rise. Industry benchmarks suggest automated exact-duplicate removal can resolve roughly 60 to 70 percent of a duplication problem at minimal cost, while the remaining near-duplicate work requires between 2 and 5 hours of analyst time per 10,000 files.

For agencies on the Northbourne Avenue corridor or in the Hume data centre precinct managing active image libraries, the practical advice from digital asset consultants is consistent: don't wait for the 2030 Digital Strategy deadline to force the issue. A storage audit conducted before the 2026-27 financial year gets fully underway will establish a baseline that makes future compliance reporting significantly cheaper. The numbers, at least, are on the side of acting now.