To answer your question about sharing data on the SAN, we have to clarify something first. To share data, you will need to use data-sharing functionally like NAS. To share storage where each server is allocated storage space, for example, a LUN, then it's a matter of providing remote access to the data and implementing LUN or volume mapping for security. For example, you could use iSCSI on a gateway or router for Ethernet-based remote servers to access Fibre Channel SAN storage.
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