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AoE (ATA over Ethernet) is a protocol that allows people using a remote storage acting like a hard drive located inside the local PC or server.

A network storage based on AoE works in superior performance because the communication layer using MAC address gives bandwidth efficiency much better then that of application layer based on TCP/IP.

Unlike NAS (Net Attached Storage), AoE is a true SAN (Storage Area Network) configuration that usually implementing in expensive and complex systems which require a more flexible and aggressive storage upgrade strategy.