本标准规定了一个光纤通道映射层（即FC-4），以支持光纤通道的使用 将串行ATA设备连接到ATA主机系统的拓扑。串行ATA接口在中定义 ATA/ATAPI-7标准集（ANSI INCITS 397-2005）。本标准规定:a）通过任何光纤通道拓扑高效传输串行ATA命令和响应；b） 通过任何光纤通道拓扑进行必要的串行ATA接口条件通信；c） 任何光纤通道上的多个主机系统协调共享使用串行ATA设备 拓扑结构；d） 发现连接到任何光纤通道拓扑的串行ATA设备； ande）与同一光纤通道拓扑中的其他光纤通道FC-4并行运行。本标准不需要更改现有的串行ATA标准，也不需要更改现有的光纤 除添加新FC-4所需的标称变更外的信道标准。这个标准是 适用于在基础设施连接设备中实施，以便现有的串行ATA和光纤 渠道产品可纳入利用本标准的系统中。

This standard specifies a Fibre Channel mapping layer (i.e., an FC-4) to enable the use of Fibre Channel topologies to attach Serial ATA devices to ATA host systems. The Serial ATA interface is defined in the ATA/ATAPI-7 set of standards (ANSI INCITS 397-2005).This standard specifies:a) Efficient transport of Serial ATA commands and responses over any Fibre Channel topology;b) Communication of necessary Serial ATA interface conditions over any Fibre Channel topology;c) Coordinated shared use of Serial ATA devices by multiple host systems on any Fibre Channel topology;d) Discovery of Serial ATA devices attached to any Fibre Channel topology; ande) Concurrent operation with other Fibre Channel FC-4s in the same Fibre Channel topology.This standard requires no changes to existing Serial ATA standards and no changes to existing Fibre Channel standards other than nominal changes necessary for addition of a new FC-4. This standard is suitable for implementation in infrastructure attachment devices, so that existing Serial ATA and Fibre Channel products may be incorporated in systems that take advantage of this standard.