To Kill-A-Watt-Hour, We Recommend to Hot Standby (2023)

By Richard Grivalsky, Comcast Cable; Brian Allen, Comcast Cable; Budd Batchelder, Comcast Cable

Operational practices have long been to rely on both power supplies, in network equipment, to prevent service interruption in the event of a single power supply unit (PSU) or input failure. Leveraging platform-level controls, such as hot standby, allows for fully redundant powering schemas while reducing energy consumption. With an eye to a greener future, Comcast has set goals to double network energy efficiency by 2030 and to be carbon neutral (Scope 1 and Scope 2 emissions) by 2035. Hot standby presented an opportunity to apply platform-level configuration changes to save power while maintaining reliability. While cable operators can benefit from hot standby at a platform level, when it comes to full-scale solutions some elements in the hardware stack need to be addressed as they do not support hot standby today. The use of hot standby has the potential to impact 34-50% of the energy pyramid (critical facilities & data centers) by reducing platform consumption by ~6%, which could potentially reduce a cable operator’s total consumed electricity by 1.4-3% as more manufacturers integrate the option in additional hardware platforms. Comcast began evaluating energy savings, with hot standby enabled, on several platforms in 2021. Identifying platforms in our next-generation hardware stack and then quantifying the power savings allowed the next phase of conversations to be had, specifically around piloting the energy-saving setting in production equipment. Our current generation of distributed access architecture (DAA) is put into production with hot standby enabled, reducing power consumption for the hardware stack by ~2%. Today, not all platforms in the stack have the required BIOS or configuration settings that allow for hot standby implementation.

By clicking the "Download Paper" button, you are agreeing to our terms and conditions.

Similar Papers

Eating the Energy Elephant One Byte at A Time: Managing Energy Consumption Across the Cable Network
By Katie Flynn, Comcast Cable; Budd Batchelder, Comcast Cable
Photon Avatars in the Comcast Cosmos: An End-to-End View of Comcast Core, Metro and Access Networks
By Venk Mutalik, Steve Ruppa, Fred Bartholf, Bob Gaydos, Steve Surdam, Amarildo Vieira, Dan Rice; Comcast
Two Years Of Deploying ITV/EBIF Applications – Comcast’s Lessons Learned
By Robert Dandrea, Ph.D., Comcast Cable
Key Learnings from Comcast’s Use of Open Source Software in the Access Network
By Louis Donofrio & Qin Zang, Comcast Cable; Vignesh Ramamurthy, Infosys Consulting
Comcast Underground: Innovative Fiber Deployments Over Existing Underground Critical Infrastructure
By Venk Mutalik, Pat Wike, Doug Combs, Alan Gardiner, Dan Rice; Comcast
Peas In a Pod: What Makes Them Green?
By Defu Li, Richard Grivalsky, Robert Gaydos, Ashok Ramasamy, Eric Stonfer, Gianni DiGregorio; Comcast Cable
Watts In An ID? Utility-Tied, Energy Consuming Asset Life Cycle Management
By Richard Grivalsky, Comcast Cable; Anusha Nukala, Comcast Cable; Alexander Falcon, Comcast Cable; Shaju Kezakykanirakat, Comcast Cable
The Future of Cable Television Audio is Accessible
By Mark Francisco, Comcast Cable
Energy Conservation Measure Recommendations for Cable Edge Facilities
By Daniel Marut & Michael Baselice, Comcast; Daniel Howard, George Gosko, Supriya Dharkar, Riebeeck van Niekerk & Tanner McManus, Hitachi; Gregory Baron, US Air Force (formerly with Hitachi)
Coaxial Cable Performance for CATV
By Allen Kushner, Times Wire and Cable
More Results >>