By the Numbers: Bendigo's Digital Archives Are Full of Duplicate Images — and the Problem Is Bigger Than Anyone Admitted

Bendigo's publicly funded digital collections are carrying thousands of duplicate image files, a problem that archivists and records managers across the region have been quietly grappling with for at least three years. The volume of redundant files sitting inside institutional servers is now large enough to affect storage budgets, slow search systems, and distort cataloguing accuracy across multiple organisations.

The issue matters right now because several Bendigo institutions are mid-way through major capital or digital upgrades. Bendigo Health is expanding its facilities on Lucan Street, and that expansion includes a refresh of its digital records infrastructure. Meanwhile, the Bendigo Regional Archives Centre on Pall Mall — which holds council, heritage, and community records dating back to the colonial era — is partway through a multi-year digitisation program. When duplicate images pile up inside growing systems, the cost of the eventual clean-up compounds with every passing month.

What the Numbers Actually Look Like

Across comparable regional Australian collecting institutions, independent audits have found that between 18 and 35 per cent of stored image files are duplicates or near-duplicates — scans of the same photograph at different resolutions, or the same artwork photographed under slightly different lighting. Applied to a mid-sized regional archive holding, say, 400,000 image files, that range suggests somewhere between 72,000 and 140,000 files that serve no unique purpose and occupy real storage capacity.

Cloud and on-premises storage is not free. Enterprise-grade storage at the scale required by a regional health service or a public archive runs at roughly $80 to $120 per terabyte per month for managed solutions, depending on redundancy requirements and vendor contracts. A collection bloated by duplicate files can push an institution into a higher storage tier unnecessarily — adding thousands of dollars to annual IT budgets that are already under pressure in regional Victoria.

La Trobe University's Bendigo campus on Edwards Road has its own digital collections tied to research outputs, student work, and regional studies projects. University library systems face the same duplication pressures: a single research project might generate dozens of near-identical image exports, each saved under a different filename and catalogued as a distinct item if intake protocols are not tight.

The Cost of Doing Nothing

Duplicate image files do more than consume disk space. They degrade search performance, create ambiguity for researchers trying to identify a definitive version of a record, and complicate rights-management workflows. For an organisation like the Bendigo Art Gallery on View Street — one of the largest regional galleries in Australia — accurate image provenance matters for loans, reproduction licensing, and public programming. A duplicate sitting in the catalogue under a slightly different file name is a legal and logistical liability, not just a housekeeping inconvenience.

The practical mechanics of replacement and deduplication have improved substantially. Perceptual hashing tools — software that generates a fingerprint for each image and flags near-matches regardless of filename — can now process tens of thousands of files in hours rather than days. Some tools are available under open-source licences, meaning smaller organisations with constrained IT budgets can run initial audits without a major procurement process. The Victorian Public Record Office has published guidance on digital record-keeping standards, and institutions working within those frameworks have a clear policy basis for actioning a deduplication project.

For Bendigo institutions, the practical next step is an audit before any further data migration or system expansion. Running a deduplication pass before files are transferred into a new system is substantially cheaper than cleaning up afterwards. Bendigo Health's infrastructure upgrade and the Archives Centre's ongoing digitisation work both represent live opportunities to get the baseline right. Delaying means paying for redundant storage, accepting degraded catalogue quality, and eventually funding a more expensive remediation project. The numbers make the case clearly enough on their own.