The Hidden Cost of Duplicate Images: What Perth's Numbers Actually Reveal

Perth's public sector and corporate sector are sitting on a quiet storage crisis. Duplicate images — identical or near-identical digital files stored multiple times across servers, backup drives and cloud platforms — now account for a measurable and growing share of total data holdings across government departments and large organisations in Western Australia. The problem is not new, but the scale has shifted sharply as Metronet construction documentation, AUKUS-related defence contractor filings and a housing approval backlog across councils from Fremantle to the City of Swan have pushed file volumes to new highs.

Why does this matter right now? The WA state budget surplus has freed up capital for digital infrastructure upgrades across several agencies, and IT procurement teams at departments including the Department of Planning, Lands and Heritage are actively reviewing storage contracts in the second half of 2026. Decisions made in the next six months will lock in spending and architecture choices for at least a five-year cycle. Getting a clear-eyed picture of the duplicate image problem before those contracts are signed is, by any measure, overdue.

The Numbers Are Harder to Ignore Than the Problem

Industry benchmarks cited by data management researchers generally place duplicate file rates in large organisations at somewhere between 20 and 40 percent of total stored data. For image-heavy workflows — construction progress photography, planning application attachments, survey imagery — that figure can run considerably higher. The City of Perth, which processes development applications covering the CBD and inner suburbs including Northbridge and East Perth, generates thousands of image attachments per year across its electronic document management system. Each application typically draws on site photographs, elevation drawings and heritage overlays, many of which are re-uploaded by different staff or external consultants without cross-referencing existing files.

At the Stirling Naval Base precinct in Rockingham, defence contractor documentation has expanded rapidly since AUKUS planning activity intensified. Contractors managing large imaging datasets — underwater survey footage, infrastructure inspection stills, geospatial renders — routinely store redundant copies across project management platforms, client-facing portals and internal archives simultaneously. A single large infrastructure inspection project can generate file duplication rates well above industry averages simply due to multi-party access requirements.

The financial dimension is concrete. Enterprise cloud storage in Australia is typically priced at somewhere between $0.02 and $0.05 per gigabyte per month depending on tier and provider. An organisation storing 100 terabytes of image data, with 30 percent of that being duplicates, is carrying roughly 30 terabytes of avoidable cost every single month. At the midpoint price, that works out to approximately $18,000 per year in pure storage waste before factoring in bandwidth, backup overhead and licensing costs tied to file counts.

Local Programs Already Trying to Close the Gap

The WA Government's GovNext-ICT program, administered through the Department of Finance on Havelock Street in Perth's CBD, was designed in part to standardise cloud infrastructure across agencies and eliminate redundant data holdings. Progress has been uneven. Agencies that migrated early, including some within the Department of Mines, Industry Regulation and Safety, have reported storage rationalisation benefits. Others are still running hybrid arrangements that can actually worsen duplication by maintaining parallel on-premises and cloud copies of the same image libraries.

Metronet project documentation presents its own specific challenge. The Forrestfield-Airport Link and the Yanchep Rail Extension have both generated extensive photographic records spanning design, construction and community consultation phases. Those records are held across multiple agencies, contractors and subconsultants, with no single deduplication protocol governing the full chain.

Organisations looking to act before the next budget cycle closes have a practical path available. A storage audit scoped specifically to image file types — JPEG, TIFF, RAW formats and PDF attachments containing embedded images — can typically be completed within four to eight weeks for a mid-sized agency. Deduplication tools from vendors including Veritas and Commvault are already approved under several WA government panel arrangements. The window for acting on the current budget surplus, and applying the savings to more productive digital investment, is open but not indefinitely.