AoE Storage Server
AoE is ATA protocol over Ethernet, a technology more similar to Fibre Channel over Ethernet than to iSCSI, utilizing ATA commands in Ethernet frames rather than SCSI commands in Internet Protocol, and thus is without the IP overhead of iSCSI resulting in faster performance. Communication is done via MAC addresses and is non-routable, so AoE is a local storage solution and AoE devices appear as regular block storage devices, i.e. they appear to your system as local storage. This also means that, unlike iSCSI, AoE cannot be accessed remotely. The lack of routability of AoE is a source of inherent security since an intruder can't connect through a router. Instead, they must physically attach to the local Ethernet switch (or gain access to the wireless network). On the down side, there are no AoE-specific mechanisms for password verification or encryption. However, additional security may be implemented at the file-system level.
Native support for AoE is in the Linux kernel since 2.6.11 and in OpenBSD since kernel 4.5. Other operating systems require 3rd party drivers. AoE storage can be managed with LVM (Logical Volume Manager), and you can create software RAID arrays out of AoE devices, or install a cluster file system on top of them.
Advantages of AoE storage include high performance, simplicity of management and low cost of installation. CCSI AoE Storage Servers provide excellent performance at very low price points.
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