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Serial general-purpose input/output (SGPIO) is a four-signal (or four-wire) bus used between a host bus adapter (HBA) and a backplane. Of the four signals, three are driven by the HBA and one by the backplane. Typically, the HBA is a storage controller located inside a server, desktop, rack or workstation computer that interfaces with hard disk drives or solid-state drives to store and retrieve data. It is considered an extension of the general-purpose input/output (GPIO) concept.
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The SGPIO specification is maintained by the Small Form Factor Committee in the SFF-8485 standard. The International Blinking Pattern Interpretation indicates how SGPIO signals are interpreted into blinking light-emitting diodes (LEDs) on disk arrays and storage back-planes.
Serial general-purpose input/output (SGPIO) is a four-signal (or four-wire) bus used between a host bus adapter (HBA) and a backplane. Of the four signals...
(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...
SGPIO is essentially another (incompatible) application stack for SPI designed for particular backplane management activities.[citation needed] SGPIO...
Electronics. Retrieved 2021-06-06. "SFF-8485 Specification for Serial GPIO (SGPIO) Bus, Rev 0.7". Archived from the original on June 26, 2019. "Mini Multilane...
arrays, and servers. Backplanes for SAS and SATA HDDs most commonly use the SGPIO protocol as means of communication between the host adapter and the backplane...
Storage SCSI Attached Fault-Tolerant Enclosure SCSI Enclosure Services SGPIO - Serial General Purpose Input/Output Solid-state drive USB Mass Storage...
buses for the fat pipes Optional serial RapidIO 8 x SATA/SAS Supported by SGPIO bus (SFF-8485 specification) for hot swapping 8 x USB 2.0 8 x USB 3.0 8...
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