Corporate Average Data Center Efficiency
Developed jointly by the Uptime Institute and McKinsey, CADE is a set of four metrics intended to rate the business performance of a single data center or the weighted average performance of several data centers.
1. Facility asset utilization: Measures current IT energy use, divided by maximum IT energy use.
2. Energy efficiency: Measures current IT energy use, divided by total facility energy use.
3. IT asset utilization: Measures average server CPU utilization.
4. IT energy efficiency: Measures useful IT work, divided by watts. Since industrywide definitions of useful IT work are still under development, CADE uses a baseline value of 5%.
According to Uptime, CADE helps quantify how much of a data center's expenditures are devoted to information processing by separating energy efficiency from capital asset utilization and IT from facilities.
While the actual definitions of the four metrics could use some fleshing out, John Stanley, research analyst at The 451 Group, says CADE is a useful framework for understanding the issues of assessing facility efficiency and utilization.
— Mary Brandel