本文详细较研究了DAS、NAS、SAN、iSCSI四种存储解决方案，分析其优缺点，为不同规模和需求的商业企业选择存储解决方案提出了建议。-In this paper, a more detailed study of the DAS, NAS, SAN, iSCSI storage solutions for four, to analyze the advantages and disadvantages of different sizes and the demand for commercial businesses to choose storage solutions that were proposed.