Design and Implementation of iSCSI Out-of-Band Storage Virtualization

This article describes the iSCSI out-of-band storage virtualization design and implementation process. The out-of-band virtualization storage technology in this paper is established based on the iSCSI protocol, the communication between the initiator and target devices in fully accordance with initiator and target model defined in iSCSI Specifications, but made a change on the flow to meet the storage virtualization requirements. Based on the analysis of the relevant virtual storage technology, this paper provide iSCSI out-of- band storage virtualization design and then describe the implementation in detail.