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Telecity Powergate datacentre
TelecityGroup's Powergate co-location facility in west London (above) is used as a spillover capacity site for data from the company's five Docklands-based and two City-based datacentres.
The facility has a PUE rating of around 1.65. As a co-location provider, Telecity is not able to choose the hardware in the facility, but it has some control over how it can increase energy efficiency.
It offers varying levels of security to companies, ranging from open racks (left) to cages (centre back) to cages with biometric and/or password protection (right).
TAKE THE TOUR: Inside Telecity's co-location datacentre
Image: Jack Clark
PGS European datacentre
Petroleum Geo-Services (PGS) operates its European datacentre in Weybridge, Surrey. The facility crunches seismic data gathered by a fleet of ships spread across the globe.
READ MORE: Inside an oil industry datacentre
The datacentre, dubbed a "megacentre" by the firm, was opened on November 2008 and replaced a 15-year-old facility. It was designed by Keysource, a datacentre specialist contractor, and has a PUE rating of 1.148. This was achieved in part through the use of cooling techniques such as filter bags (pictured), which filter warm air and send it back through a water-cooled gate for reuse.
Image: Jack Clark
HP datacentre, Sydney
HP's latest datacentre is built on 13.4ha of land out in Western Sydney. Currently under construction, it has been designed from the ground up, in the form of three separate shells that are able to operate independently of each other.
Each cell provides a space of 2000m2 for racks in a hot-aisle configuration, and an additional 500m2 of raised floor space.
The majority of racks in the first cell run on a concrete slab (pictured). Hot air is exhausted out, into the aisles.
READ MORE: HP opens Sydney datacentre: photos