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The International Blinking Pattern Interpretation (IBPI) is an internal computer hardware standard. It defines two items: # How SGPIO is interpreted into states for drives or slots on a backplane. # How light emitting diodes (LEDs) on a backplane should represent these states. IBPI was defined by the SFF-8489 specification of the Small Form Factor Special Interest Group in 2011. SGPIO has been adopted across the storage industry, and has in large replaced proprietary protocols such as SCSI Enclosure Services (SES) and SAF-TE. ''States'' for drives or slots can be, for example, ''empty'', ''failed'', ''rebuilding'', etc. The ''state'' of a drive or slot is determined by the host bus adapter, and is typically transmitted to the backplane through SGPIO-signals on a cable. ==Typical system architecture== In a typical system architecture, the host bus adapter (HBA) connects to a backplane through a 4× iPass cable. The SGPIO-signals run inside this cable. The backplane may then optionally connect to the baseboard management controller of a motherboard through an I²C or SMBus. The SGPIO bus consists of 4 electrical signals. It ''originates'' (or is driven by) an ''initiator'', typically a host bus adapter or SAS Expander, and arrives at a ''target'', typically a backplane. SGPIO is typically used in conjunction with SAS or SATA cables, where each physical port is attached to a single disk drive. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「International Blinking Pattern Interpretation」の詳細全文を読む スポンサード リンク
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