Tim Greene

Executive Editor

Tim Greene is executive editor of Network World.

Weekly internet health check, US and worldwide

Report: Cloud services can be made more resilient but at a premium

Report: Cloud services can be made more resilient but at a premium

Uptime Institute says enterprises should beware that some cloud services that may appear more resilient may actually provide few guarantees of better availability.

The ‘Cisco’ gear you bought from these companies could be counterfeit

The ‘Cisco’ gear you bought from these companies could be counterfeit

US charges: A years-long conspiracy has taken in $100M+ selling used Cisco devices disguised as new, more recent models

World's first exascale supercomputer is the world's fastest

World's first exascale supercomputer is the world's fastest

Frontier, the supercomputer at Oak Ridge National Laboratory, blows away the competition with a performance of 1.12 exaFLOPS.

Facebook outage was a series of unfortunate events

Facebook outage was a series of unfortunate events

A badly written command, a buggy audit tool, a DNS system that hobbled efforts to restore the network, and tight data-center security all contributed to Facebook’s seven-hour Dumpster fire.

Fugaku still reigns as the world’s fastest supercomputer

Fugaku still reigns as the world’s fastest supercomputer

The June 2021 TOP500 list of the fastest supercomputers has Fugaku ranked at number one, attaining the top slot for the third time and still three times faster than any other.

Center for Internet Security: 18 security controls you need

Center for Internet Security: 18 security controls you need

The goal of CIS Controls V8 is to provide practical and specific actions that can spark creation of a better network security environment.

World's fastest supercomputers: Fugaku is still No. 1 at 3X the speed of No. 2

World's fastest supercomputers: Fugaku is still No. 1 at 3X the speed of No. 2

The TOP500 list tracking the fastest supercomputers has two brand new machines that broke into the list by knocking out two of the former top 10.

How networking pros can help make better IT buying decisions

How networking pros can help make better IT buying decisions

Knowing how smart buying teams make good choices adds to the value IT pros bring to the task of purchasing new hardware, software, and services.

The 10 fastest supercomputers are led by one 2.8x faster than the rest

The 10 fastest supercomputers are led by one 2.8x faster than the rest

The TOP500 list of the world’s fastest supercomputers for June 2020 is led by an ARM-powered machine that performs 415.5PFLOP/sec and that can be tuned to handle AI apps at 1 exaFLOP/sec.

Sales of Ethernet switches and routers hit a 7-year low in Q1

Sales of Ethernet switches and routers hit a 7-year low in Q1

COVID-19-related supply-chain issues, uncertainty undercut revenues from switches and routers.

What is the internet backbone and how it works

What is the internet backbone and how it works

Tier 1 internet service providers (ISP) mesh their high-speed fiber-optic networks together to create the internet backbone, which moves traffic efficiently among geographic regions.

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