WWN : A World Wide Name (WWN) or World Wide Identifier (WWID) is a unique identifier used in storage technologies including Fibre Channel, Parallel ATA, Serial ATA, NVM Express, SCSI and Serial Attached SCSI (SAS).
ATA : Advanced Technology Attachment 用于连接存储设备的接口标准
ATA 与 IDE 关系最为紧密；
2002年推出的SATA，原有的ATA改名为PATA；
1986年设计的PATA接口，在经历27年之后，正式退出历史舞台；
HBA是Host Bus Adapter（主机总线适配器）的简称，它是一个在服务器和存储装置之间提供物理连接和输入／输出（I／O）处理的电路板或集成电路适配器。
使用HBA卡可以大大减轻主机微处理器进行数据存储和数据检索的负担。
如今HBA卡已被广泛应用于各种互联，最常用的是基于光纤通道、iSCSI和SAS协议的连接。HBA卡根据支持的协议有不同的类型，如FC HBA卡、iSCSI HBA卡和SAS HBA卡。
A host bus adapter (HBA) is a circuit board or integrated circuit adapter that connects a host system, such as a server, to a storage or network device.
An HBA also provides input/output (I/O) processing to reduce the load on the host's microprocessor when storing and retrieving data, helping to improve the host's overall performance.
Most HBA cards plug in to the Peripheral Component Interconnect Express (PCIe) slots of the host computer, although they might come in other form factors, such as mezzanine cards for blade servers.
Although the term HBA can apply to a variety of interconnects, it is most commonly used with storage protocols, such as Fibre Channel (FC), Small Computer System Interface(SCSI), Serial Advanced Technology Attachment (SATA) and Serial-Attached SCSI (SAS).