PERFORMANCE PROBLEM DETECTION IN ARRAYS OF SIMILAR HARDWARE

Embodiments described herein include detecting under-performing devices using a correlational matrix in which devices are compared with one another in order to establish which devices are performing significantly different, e.g. under-performing, than the rest. According to one embodiment, a method includes generating a vector for each of a plurality of hardware devices. Using a hardware processor, a correlational matrix representing projections of the vectors against each other is created. A determination is made as to which hardware device is least like the other hardware devices based on the correlational matrix. A result of the determining is output.