 Within a compliance period, a given number of data samples are expected for?each of the underlying Quality of Services.
 In order to ensure that the compliance calculation is based on a fair amount of data, a concept?called ?DataLoss Threshold (DLT) ?is introduced.
 ?DLT is a means of invalidating the calculation based on the actual amount of data available for the calculation.
 The DataLoss Threshold is the percentage of the number of samples that can be missing before invalidating the constrained QoS, thus returning 0% compliance. If the DLT is unused then the compliance calculation is based on all available samples.
 E.g. Consider a compliance period of 1 week, and a sampling of disk usage every 5 minutes. This will result in 2016 samples within a period of 1 week (7*24*60/5). If all of the samples are present, then this will fulfill a DLT of 100%. Hence, 1978 samples will fulfill a DLT of 98.11%.
