Perth's Duplicate Image Problem: The Numbers Reveal a City Burning Through Digital Storage at Record Speed

Perth's digital infrastructure is carrying a weight most residents never see. Duplicate images — redundant photo files copied, re-uploaded and stored across overlapping systems — are consuming terabytes of taxpayer-funded server capacity across WA government agencies, real estate platforms and the state's booming resources sector. The scale of the problem, measured through storage audits and IT procurement records, is quietly driving up operational costs at a time when the Cook government is under pressure to deliver budget efficiency alongside its record $7.2 billion infrastructure spend.

The timing matters. The rapid buildout of the Metronet rail expansion — which now stretches from Yanchep in the north to Byford in the south-east — has generated an enormous paper trail of engineering photographs, drone survey images and construction progress documentation. Each project stage triggers fresh uploads, often to multiple platforms simultaneously. Without automated deduplication protocols in place, the same aerial photograph of, say, the Morley-Ellenbrook Line corridor can exist in four or five separate folders across as many agencies.

What the Data Actually Shows

Storage auditors working in the enterprise IT sector estimate that duplicate files — images chief among them — can account for between 20 and 40 percent of total stored data in large organisations without active deduplication management. For the WA public sector, which runs its cloud operations partly through agreements with data centres located in the Herdsman and Malaga business precincts north of the city, the cost implications are direct. Cloud storage in Australia currently runs at roughly $0.023 per gigabyte per month under standard enterprise contracts — a figure that compounds quickly when agencies are storing the same infrastructure photography three or four times over.

The property sector tells a similar story. Perth's median house price crossed $820,000 in the June quarter, pushing transaction volumes higher and flooding real estate platforms like REIWA's listings portal with hundreds of thousands of new property images each month. Industry insiders have flagged to The Daily Perth that major agencies operating out of offices on St Georges Terrace and along the Hay Street commercial strip are running image libraries with duplication rates that inflate storage bills without adding any listing value. A single four-bedroom house in Baldivis or Ellenbrook can generate 40 to 60 raw photographs from a shoot, of which a professional platform might use 20 — yet all 60 routinely end up archived in multiple folders.

The AUKUS defence contracts flowing through HMAS Stirling on Garden Island add another dimension. Defence subcontractors managing site documentation for submarine infrastructure work are subject to strict data sovereignty requirements under federal law, meaning images cannot simply be deduplicated through offshore cloud tools. Local vendors in the Osborne Park and Wangara industrial corridors have been pitching on-premise deduplication appliances to defence-adjacent firms precisely because of this compliance gap.

What Agencies and Businesses Should Do Next

The fix is not complicated, though it does require budget commitment. Hash-based deduplication — a process where software generates a unique fingerprint for each image file and flags exact matches — can reduce duplicate image storage by 30 to 60 percent in a typical enterprise environment, according to published benchmarks from vendors including Veritas and Commvault. For a mid-sized WA government agency sitting on two petabytes of unmanaged image data, that translates to a potential annual saving in the low hundreds of thousands of dollars.

The Department of Finance's Office of Digital Government published updated data management guidelines in March 2025, which include recommendations for agencies to conduct annual storage audits. Whether those audits are happening consistently across every Metronet project body, every regional office and every defence subcontractor is a separate question — one that budget estimates hearings at Parliament House on Harvest Terrace have not yet specifically tested.

The practical advice for both public agencies and private firms in Perth is the same: run an audit before the next storage contract renewal, implement automated duplicate detection at the point of upload rather than retrospectively, and treat image files with the same discipline applied to financial records. The terabytes are adding up, and so are the bills.