A method of recovering a value in a data storage system includes maintaining a list of entries corresponding to values that have been inserted into the data storage system, determining whether the values are at an At Maximum Redundancy state, and if not, the converging the values to the AMR state. The connector performs a part of the function of the media server and connect a distribution server that distributes an input media packet to the telephone terminals. The compositions can be administered topically or for systemic use. The front panel comprises an innermost edge foldably connected to the side of the back panel opposite the side on which the closing slot is located. This acrylic acid type polymer is a water-soluble polymer of a low molecular weight which has only a small impurity content, entails no precipitation of an impurity during the preservation at a low temperature, and excels in dispersibility, chelating ability, and an anti-gelling property.