AUTOMATED UPGRADING METHOD FOR CAPACITY OF IT SYSTEM RESOURCES

摘要

A completely automated upgrading method for capacity of IT system resources specially designed for an unskilled capacity pianner is disclosed. Due to the adaptability of our methodology it does not require any manual intervention at any stage of prediction. The method comprises the steps of monitoring over time a signal representing the capacity of a predetermined IT system resource and collecting a dataset of said signal, then analysing said dataset through a prediction method to forecast said dataset behaviour and further upgrading said capacity at time t-n, through allocating additional resource to the IT system, when said estimated dataset behaviour shows that at time t said resource reaches a critical threshold, said prediction method being based on our automation of the Box&Jenkins method and Further comprising subsequently (a) to pre-process dataset, where missing values of the dataset are filled, level discontinuities and outliers are filtered out, the last P samples are left out, (b) to find a trend of the remaining dataset, where trend is identified and fiitered out of the dataset through coefficient of determination method¬ ology,. (c) to detect seasonality through computing an auto correlation function of the remaining dataset, further repeating the same detection on aggregate series of the previous dataset, and removing detected seasonality through a seasonal differencing process, (d) to model the resulting stationary series S(t) under an ARMA(p,q) process, and said prediction method to forecast said behaviour at time t being computed following the inverse order of steps (b)-(d).