1. A method of managing data in a multi-storage system that includes multiple storages for storage of the data, the multi-storage system including at least two storages that differ from each other with respect to one or more criteria, wherein the method is implemented at least partly by a device, and wherein the method comprises: managing storage of data in a first one of the multiple storages, based on a temperature value of the data associated with a second one of the multiple storages, wherein: the temperature value of the data is indicative of one or more storage management policies with respect to storage of the data in the at least two storages based on the one or more differing characteristics; the one or more differing characteristics include volatility and/or persistence of storage of the data; and managing the storage of data further comprises managing the storage of data for a volatile storage of the multi-storage system, based on a temperature of the data obtained for a non-volatile storage of the multi-storage system.