Global Switch PAR E project
Entry Description
Global Switch, one of the world’s leading carrier and cloud neutral data centres, is part way through a major redevelopment / power densification of its Paris East data centre which is part of the company’s 50,000 sq m campus located in Clichy-Levallois, a prime area centred between the city's financial district and one of the most important European business districts, Paris La Défense.

The project, in three phases, will see the redevelopment of the facility with the main aim to increase power density and improve energy efficiency. The facility is set over six levels and encompasses the modification of the power and cooling infrastructure to create multiple high density technical suites. Phase 1 includes the construction of three suites offering a density of >2,500 W/m2. Huawei UPS and lithium-ion battery technology was selected by Global Switch as they offered the best ratio of space to power on the market and an optimized total cost of ownership (TCO).

The Paris East development project addresses the challenge of increasing power density and energy efficiency and requiring more absolute power by harnessing the latest fit-for-purpose technology. Global Switch chose SmartLi which is an innovative energy storage solution based on lithium-ion technology and is designed to meet the back-up requirement of UPS in various scenarios. This approach features a number of stand-out innovations and benefits.

High power density
To achieve the maximum power density in the space – considering both power and cooling –Huawei SmartLi UPS technology was chosen by Global Switch due to its best-in-class spatial requirements, meaning that power densities >2,500w/m2 could be delivered, a saving of more than 60% compared to lead-acid batteries.

High efficiency
The UPS technology is one of the most efficient on the market, using hibernation technology to achieve light load efficiency and reach 97% efficiency in rectifier-inverter mode. The intelligent online mode delivers even more performance, reaching 99%, achieving full-load efficiency and ensuring an uninterrupted high-quality power supply.

Flexible scalability
The technology’s modular nature means it can be deployed in 100kW units to suit the growth of the customer load whilst offering a high level of resilience meaning that the failure of one module will not render the whole capacity of the UPS to be lost. This scaling on demand reduces investment risk and TCO.

Safety and reliability
The battery technology is based on Lithium Iron Phosphate (LFP) chemistry which one of the safest and most stable chemistries for stationary lithium-ion battery systems. It eliminates the need for routine inspections and, with no risk of a hydrogen leak compared to lead-acid battery, there is no need to factor in the cost of installing a hydrogen detection system. With no oxygen being generated, there is no risk of fire in the event of thermals runaway. Fault location is simplified due to real-time monitoring of parameters such as voltage, current and switch status, as well as node temperature. The three-layer Battery Management System also applies refined management to ensure reliability.

Predictive maintenance
With the ability to predict system performance and component lifespan, maintenance scheduling is transformed, enabling the operator to act before issues occur and service is interrupted.

The Paris East project presented a range of challenges beyond the technological demands already referred to above.

These included carrying out a major redevelopment project with an international delivery team during a global pandemic. Comprehensive safety measures were introduced and regularly adapted to fit with changing government regulations, ensuring the safety of the team, contractors and customers.

The benefits extend from the logistical to the technical and all have the effect of reducing the TCO of the data centre, enabling Global Switch to optimize the way it delivers best-in-class technology and service.
Space - A key benefit has been a 50% reduction in the footprint required for the Huawei Smart Li UPS technology compared to lead-acid batteries.
Longevity - The technology has a lifespan of 15+ years, reducing the OPEX of the data centre
Maintenance- The installed technology uses AI to gather insight that can be used for predictive rather than reactive maintenance. For example, it can predict capacitor and fan lifespan, key node temperatures and battery capacity.
Flexibility - SmartLi technology uses current equalization technology to allow the hybrid use of old and new batteries. Working with Huawei modular UPS, it also enables capacity to be expanded on demand.