The datacentre covers 400 square metres of floor space.

Datacentre provider Harbour MSP has entered into a long-term agreement with Vocus for services in the datacentre worth over $2 million.

These junction boxes power one of the studios in the datacentre facility.

The centre can support up to 30kW/128 amps per rack with an average of 3600W per square metre.

It took Vocus 45 days to get the datacentre up and running since the takeover.

Vocus chief executive officer James Spenceley said the centre was already at 30 per cent of capacity and Vocus would be looking for a second Sydney facility in the near future.

The cables above the racks would not be out of place in an episode of Doctor Who.

The cooling systems for the datacentre.

Powering for the cooling unit. Vocus Data Centres general manager Jon Eaves said the efficiency of the cooling systems would save the company around $74,000 per year in power costs.

The view from the datacentre, which is located in the Sydney suburb of Alexandria.

Two large air-conditioning units reside on the roof of the complex to keep the centre at the correct temperature.

Vocus said this datacentre is the first "green" one of its kind in Australia.

Spenceley speaking at the launch.

Shadow Communications Minister Malcolm Turnbull launched the datacentre and recalled his days at OzEmail where a datacentre was a number of modems kept cool using fans from a hardware store.

Turnbull officially opens the datacentre by switching on the air conditioning.