Abstract: Described are various embodiments of systems, devices and methods for generating locality-indicative data representations of data streams, and compressions thereof. In one such embodiment, a method is provided for determining an indication of locality of data elements in a data stream communicated over a communication medium. This method comprises determining, for at least two sample times, count values of distinct values for each of at least two distinct value counters, wherein each of the distinct value counters has a unique starting time; and comparing corresponding count values for at least two of the distinct value counters to determine an indication of locality of data elements in the data stream at one of the sample times.

Abstract: Systems, methods and devices for monitoring data transactions in a data storage system, the data storage system being in network communication with a plurality of storage resources and comprising at least a data analysis module and a logging module, and receiving at the data analysis module at least one data transaction for data in the data storage system, each data transaction having at least one data-related characteristic; storing in the logging module the at least one data-related characteristic and a data transaction identifier that relates the data transaction to the associated at least one data-related characteristic in the logging module; analyzing at the data analysis module at least one data-related characteristic related to a first data transaction to determine if the first data transaction shares at least one data-related characteristic with other data transactions; and, in cases where the first data transaction shares at least one data-related characteristic with at least one other data transacti