• • • DATA CENTRE MANAGEMENT • • •


equipment with new, more energy-efficient technologies such as low-power servers. According to a report by Pike Research, by the


end of 2021 cloud computing could help cut the global IT carbon footprint by 38%. Nevertheless, this result is dependent on the creation of sustainable data centres, so data centre operators need to take proactive steps now.


Flexible equipment As data centres become more popular, the need for synchronizing data between them is increasing. Transceivers are an integral component of any data centre as they help businesses access their data in real time and connect devices in data centres in different locations, while maintaining a strong bandwidth and network speed. A great advantage of transceivers is that they


can be configured to reduce energy consumption. For example, using QSFP28 CWDM4 for inside


data centre connection helps data centres save energy, as this transceiver has a power consumption around 20% lower than other types. Similarly, when connecting data centres, most


operators use complete DWDM systems that include transponders and muxponders instead “coloured” transceivers like the QSFP29 DWDM connecting data centre. The latter type allows data centre operators to send DWDM wavelength directly from network devices without the need to power additional muxponders and transponders. They also provide a capacity of up to 4TB/s on one fibre and facilitate the connection of data centres that are up to 120km apart. This type of transceiver has a maximum power


consumption of 4.5W, which is much lower than other form factor 100G DWDM transceiver and can help operators achieve up to 90 per cent energy saving. Thus, it is ideal for operators who want to achieve a green data centre. What’s more, with the latest technology operators are able to


enlarge the capacity of their DWDM system even up to 25.6Tb from one pair of fibre. They just need to implement a QSFP-DD solution that supports coherent technology. As data volumes continue to grow, data centre


operators need to take proactive steps to accommodate the increase in a sustainable and cost-effective way. Measures such as data compression, equipment upgrades and using flexible and configurable transceivers are key to optimise the infrastructure while reducing data centres’ carbon footprint. At Salumanus, we believe operators and


telecom experts have a responsibility to deliver more sustainable practices in the industry, which is why we are committed to promoting the use of QFP28 DWDM as well as QSFP-DD coherent transceivers among operators and to support them in the process of achieving a green data centre.


electricalengineeringmagazine.co.uk


ELECTRICAL ENGINEERING • APRIL 2022 21


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