“…For example, one (or n) identical copy(s) of the database can be made, thus ensuring an environment with high availability, even if in a highly costly manner. In this category there is the SprintNet approach , presented below, in addition to proposals such as FIR3 (Vijayakumar et al, 2015), DCR2S (Gill & Singh, 2016) Morpho (Lu et al, 2015), Tahoe-LAFS (Selimi et al, 2019), Hybrid algorithm based on MapReduce (Zhang et al, 2019), GFS (Nakanishi et al, 2014), Private multilayer storage system (Gonzalez et al, 2013) and SwiftER (Datta et al, 2016), which are presented below.…”