Decentralized, distributed storage offers a way to reduce the impact of data silos as often fostered by centralized cloud storage. While the intentions of this trend are not new, the topic gained traction due to technological advancements, most notably blockchain networks. As a consequence, we observe that a new generation of peer-to-peer data networks emerges. In this survey paper, we therefore provide a technical overview of the next generation data networks. We use select data networks to introduce general concepts and to emphasize new developments. Specifically, we provide a deeper outline of the Interplanetary File System and a general overview of Swarm, the Hypercore Protocol, SAFE, Storj, and Arweave. We identify common building blocks and provide a qualitative comparison. From the overview, we derive future challenges and research goals concerning data networks.
翻译：中央云层储存经常促成数据分散、分布式储存,这是减少数据筒仓影响的一种方式,虽然这一趋势的意图并非新意,但随着技术进步,特别是供应链网络的发展,这个专题获得了牵引力,因此,我们注意到新一代的同侪数据网络出现,因此在本调查文件中,我们对下一代数据网络提供了技术概览,我们利用选定的数据网络介绍一般概念和强调新的发展,具体来说,我们提供了行星际文件系统更深的轮廓,以及Swarm、超核心议定书、SAFE、Storj和Arweave的概况。我们从概览中找出了共同的构件,提供了质的比较。我们从概览中得出了有关数据网络的未来挑战和研究目标。
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