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The multipathing solutions using redundant physical path components (adapters) to create logical paths between the server and the storage device. In case of failure of one of these components or more of them, causing the failure of the path, the multipathing logic uses an alternate path for I / O operations so that applications can still access their data. Each network interface card (in the iSCSI case) or host bus adapter must be connected through redundant switch infrastructures to provide continued access to storage in the event of failure of a component of all optical fiber storage
