VIFIB maintains 2 clones and backups on 35 different sites to achieve unparalleled resiliency

Press Release

Paris, December 8, 2014. ViFiB deployed today a new resource allocation algorithm that reduces energy usage of cloud computing by 30% or more. Thanks to this new algorithm, ViFiB Net Power Usage Effectiveness (PUE) reached a record low of 20%, better than previous world record at Uspenski datacenter (Helsinki, Finland).

Jean-Paul Smets, CEO of ViFiB, explains: "Power Usage Effectiveness measures the efficiency of energy usage in datacenters by comparing how much power is used by computers of an IT facility and how much net power is used by the IT facility as a whole. In traditional datacenters, a lot of energy is wasted for cooling, resulting in PUE of 150% or more. By reusing heat generated by computers for houselhold heating and using natural cooling, some datacenters with PUE of 150% achieve Net PUE of less than 50%."

Rafael Monnerat, ViFiB COO, adds: "ViFiB innovation consists of reducing Net PUE by allocating cloud computing resources in priority to, first, computers that contribute to household heating, second, to computers which load is already greater than 25%, and third to computers which load is less than 25%. This simple allocation process optimizes power efficiency by leveraging the non-linear relation between computer load and power usage as illustrated bellow; the more a computer is used, the less additional energy it requires to be further used."

Rafael Monnerat, continues: "In other words, running two processes of 40% load each in the same computer consumes less energy than running each process alone in a different computer." 

Alain Takoudjou, ViFiB developer, confirms:  "In addition to lowest Net PUE, ViFiB also provides one of the highest Net Performance per Watt by using exclusively low power Core M (45W Core i7) and solid state disks (SSD) that power its heat pipe cooled micro-servers. This infrastructure has been deployed for more than 4 years and has reached sufficient stability to host mission critical ERP for large multinational companies."

Jean-Paul Smets concludes: "ViFiB new allocation algorithm has been developped thanks to Paris Region "AIR" programme which promotes innovation and entrepreneurship of eco-efficient technologies. It demonstrates that smart cities can also be eco-efficient cities."  

Power Usage vs. Computer Load

Two processes allocated on two computers require 100 W

Two processes allocated in the same computer require 70W

Permanent URL for this Press Release


Jean-Paul Smets - CEO Nexedi SA - jp (at) nexedi (dot) com - Tel. +33 (0)6 29 02 44 25

About ViFiB

ViFiB, a company of Nexedi Group, is specialized in "Post Cloud" Computing services for companies that require increased flexibility, higher resiliency and better trade secret. ViFiB operates SlapOS on a decentralized infrastructure designed to protect critical corporate data against possible downtime or destruction. ViFiB is a major contributor to SlapOS open source provisioning and billing technology.

More information on

About SlapOS

SlapOS is an open source provisioning and billing software optimized for high performance, high resiliency, low operating cost and low power usage. SlapOS modular architecture supports all aspects of "Post Cloud" technologies, including "No Datacenter", "Edge Computing" and "Multi-Cloud". SlapOS includes support for virtualization (kvm, ZeroVM), a portable Web based Platform as a Service (PaaS) and an application store for Software as a Service (SaaS).

SlapOS technology unifies through a single DevOps paradigm the automation of modern infrastructure: administration, deployment, provisioning, configuration, monitoring, backup, restore, test, upgrade, data migration and billing. SlapOS is compatible with major industry standards (VMWare, OpenStack, Amazon, Azure, etc.) and architectures (Intel, ARM, MIPS, etc.).

More information:

About Nexedi

Nexedi is the creator and leader of the ERP5 Open Source ERP project. Nexedi has developed and deployed ERP5 for a wide range of industries such as aerospace, apparel, banking, healthcare and government. ERP5 is used in companies of all sizes in Africa, Asia, Europe, North and South Americas. The open source nature of ERP5 eliminates licensing costs and provides full freedom to update and customise the system as business requirements change with no single vendor lock-in.

Nexedi is a major contributor to the SlapOS technology, an open source provisioning and billing software optimized for high performance, high resiliency, low operating cost and low power usage.

Nexedi provides 24H around-the-clock support to corporations and governments wishing to migrate their mission critical applications to open source software solutions.

More information at, et


SlapOS is a registered trademark of ViFiB. Nexedi and ERP5 are registered trademarks of Nexedi.