Cloud computing slows energy demand

US finds shift away from traditional DCs has reduced power-usage growth from 24% to just 4%

Ten years ago, power usage at data centres was growing at an unsustainable rate, soaring 24% from 2005 to 2010. But a shift to virtualisation, cloud computing, and improved data centre management is reducing energy demand.

According to a new study, data centre energy use is expected to increase just 4% from 2014 to 2020, despite growing demand for computing resources.

Total data centre electricity usage in the US, which includes powering servers, storage, networking, and the infrastructure to support it, was at 70 billion kWh (kilowatt hours) in 2014, representing 1.8% of total US electricity consumption.

 

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Based on current trends, data centres are expected to consume about 73 billion kWh in 2020, becoming nearly flat over the next four years, according to a study by the US Department of Energy’s Lawrence Berkeley National Laboratory. “However, demand for computations and the amount of productivity performed by data centres continues to rise at substantial rates.”

Improved efficiency is most evident in the growth rate of physical servers.

From 2000 to 2005, server shipments increased 15% each year, resulting in a near doubling of servers in data centres. From 2005 to 2010, the annual shipment increases fell to 5%, but some of this decline was due to the recession. Nonetheless, this server growth rate is now at 3%, a pace that is expected to continue through 2020.

The reduced server growth rate is a result of the increase in server efficiency, better utilisation thanks to virtualisation, and a shift to cloud computing. This includes concentration of workloads in so-called hyperscale data centres, defined as 400,000 square feet in size and above.

Energy use by data centres may also decline if more work is shifted to hyperscale centres, and best practices continue to win adoption.

“I’m even more optimistic than the study authors and would predict that total energy usage will go down as more IT users transition to public clouds, which not only have the most efficient buildings but through consolidation and elastic scaling reduce the energy per application,” said Urs Holzle, Google’s senior vice president for infrastructure, wrote in a blog post in response to the study. The shift to mobile devices, which use less power than desktops, will help as well in conserving energy.

 

 

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placeholder: '+44 0000 000000', helpText: 'Include the JE country code +44 before the phone number', }, { countryCode: 'IM', placeholder: '+44 0000 000000', helpText: 'Include the IM country code +44 before the phone number', }, { countryCode: 'GG', placeholder: '+44 0000 000000', helpText: 'Include the GG country code +44 before the phone number', }, { countryCode: 'AL', placeholder: '+355 00 000 0000', helpText: 'Përfshini kodin e vendit AL +355 para numrit të telefonit', }, { countryCode: 'SM', placeholder: '+378 0000 000000', helpText: 'Includere il prefisso internazionale SM +378 prima del numero di telefono', }, { countryCode: 'FO', placeholder: '+298 000000', helpText: 'Inkluder FO landekode +298 før telefonnummeret', }, { countryCode: 'MT', placeholder: '+356 0000 0000', helpText: 'Include the MT country code +356 before the phone number', }, { countryCode: 'LI', placeholder: '+423 000 0000', helpText: 'Fügen Sie vor der Telefonnummer die LI-Ländervorwahl +423 ein', }, { countryCode: 'GI', placeholder: '+350 000 00000', helpText: 'Include the GI country code +350 before the phone number', }, { countryCode: 'MD', placeholder: '+373 00 000 000', helpText: 'Includeți codul de țară MD +373 înaintea numărului de telefon', }, { countryCode: 'HU', placeholder: '+36 00 000 0000', helpText: 'A telefonszám előtt adja meg a HU országkódot +36', }, { countryCode: 'NZ', placeholder: '+64 00 000 0000', helpText: 'Include the NZ country code +64 before the phone number', }, { countryCode: 'ME', placeholder: '+382 00 000 000', helpText: 'Uključite ME pozivni broj države +382 prije telefonskog broja', }, ]; if (!countryCode || typeof countryCode !== 'string') { return mockPlaceholders[0].helpText; } const selectedHelpText = mockPlaceholders.find(function(item) { return item && item.countryCode === countryCode; }); return selectedHelpText ? selectedHelpText.helpText : mockPlaceholders[0].helpText; } function setDefaultHelpText(countryCode) { const helpTextSpan = 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: false; var shouldAppendCountryCode = smsNotRequiredRemoveCountryCodeEnabled ? isRequired : true; var phoneInput = document.querySelector('#mce-' + fieldName); if (phoneInput && defaultProgram.countryCallingCode && shouldAppendCountryCode) { phoneInput.value = defaultProgram.countryCallingCode; } displayFlag?.addEventListener('click', function(e) { dropdown.focus(); }); dropdown?.addEventListener('change', function() { const selectedCountry = this.value; if (!selectedCountry || typeof selectedCountry !== 'string') { return; } const flagSpan = displayFlag?.querySelector('#flag-emoji-' + fieldName); if (flagSpan) { flagSpan.textContent = getCountryUnicodeFlag(selectedCountry); flagSpan.setAttribute('aria-label', sanitizeHtml(selectedCountry) + ' flag'); } const selectedProgram = window.MC?.smsPhoneData?.programs.find(function(program) { return program && program.countryCode === selectedCountry; }); var smsNotRequiredRemoveCountryCodeEnabled = true; var smsField = 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fieldName); updateCountryCodeInstruction(selectedCountry, fieldName); }); } document.addEventListener('DOMContentLoaded', function() { const smsPhoneFields = document.querySelectorAll('[id^="country-select-"]'); smsPhoneFields.forEach(function(dropdown) { const fieldName = dropdown?.id.replace('country-select-', ''); initializeSmsPhoneDropdown(fieldName); }); });

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