This application provides a hard drive status
light control system and method for a hard drive
backplane, belonging to the field of hard drive hardware management technology. The
system provided includes a main hard drive
backplane and cascaded hard drive backplanes. The main hard drive
backplane is equipped with a SAS expander, a CPLD, and a
cascade connector. The cascaded hard drive backplanes are connected to the main hard drive backplane via the
cascade connector. The
SGPIO of the SAS expander is connected to the input of the CPLD, receiving the
SGPIO bitstream signal output from the SAS expander, reconstructing the
SGPIO bitstream signal, and sending the reconstructed SGPIO
bitstream signal to the cascaded hard drive backplanes. The cascaded hard drive backplanes parse the reconstructed SGPIO bitstream signal and drive the hard drive status lights to indicate the hard drive status based on the parsed SGPIO bitstream signal. The hard drive status
light control system and method for a hard drive backplane provided in this application enable the reuse of existing hard drive backplane hardware and
firmware, reducing maintenance costs.