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Vishwajit Joshi

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Creating a More Accurate IT Availability Definition

Availability is one of the key metrics that demonstrates the overall performance of an information technology (IT) system. But defining and calculating the availability of an IT system from a business perspective is a challenging task. Most of the time, IT departments report availability values that are on the higher side (such as more than…


A Roadmap for Using Time-weighted Control Charts

Selecting the right type of control chart is a vital starting point for statistical process control (SPC). Which chart to use depends mainly on the classification of the data, the type of underlying distribution and the intent of the application. Selecting the wrong type can result in many false alarms, leading to expensive and fruitless…