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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 more better application layer based on TCPIP.

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