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In this paper, we present an open source network storage protocol, HyperSCSI, which can be applied to build a home storage network. HyperSCSI is designed for transmission of SCSI (small computer system interface) protocol data across Ethernet based network. With HyperSCSI, a home user can access SCSI or non-SCSI storage device (like IDE, USB) natively through the network as if the storage device is attached locally. We describe HyperSCSI protocol architecture, operations, as well as some key protocol features that make it distinct from the other conventional solutions. We also demonstrate the experiment and applications that integrated HyperSCSI protocol with fast Ethernet and IEEE 802.11b/g WLAN (wireless local area network) environment. The results show that it is promising to build efficient and cost-effective HyperSCSI based home storage network that utilizes common-off-the-shelf storage hardware and well deployed network infrastructure.