Entries by Andy Lawrence

Is PUE actually going UP?

One of the more intriguing results of the Uptime Institute Global Data Center Survey 2019 concerned energy efficiency.  For years, data centers have become ever more efficient, with power usage effectiveness (PUE) ratings across the industry (apparently) falling.  Big operators, such as hyperscale cloud companies and big colos, regularly claim annual or design PUE figures […]

Comparing the severity of IT service outages: Uptime Institute’s Outage Severity Rating

Avoiding IT service outages is a big concern for any operator or service provider, especially one providing a business-critical service.  But when an outage does occur, the business impact can vary from “barely noticeable” to “huge and expensive.”  Anticipating and modeling the impact of a service interruption should be a part of incident planning and is key […]