SERIAL ATTACHED SCSI EXPANDER AND METHOD FOR DEBUGGING FAULTS THEREOF

摘要

Serial Attached SCSI (SAS) expander includes an exposed SAS interface connector, a microcontroller unit (MCU), a smart port, and an SAS expander chip. The SAS interface connector is coupled to a host personal computer (PC) to receive commands sent from the host PC. When a fault occurs in the SAS expander or a connected storage device, the MCU enables the smart port in response to a first control command sent from the host PC, reads status information from the SAS expander chip through the smart port in response to a status reading command sent from the host PC, and sends read status information back to the host PC for analyzing. MCU obtains detailed fault information from the SAS expander chip through the smart port in response to a detailed fault information obtaining command sent from the host PC and sends the obtained detailed fault information back to the host PC.

主权项

1. A method for debugging fault of a Serial Attached SCSI (SAS) expander using a host personal computer (PC), the SAS expander comprising an exposed SAS interface connector coupled to a host PC, and a microcontroller unit (MCU), a smart port and an SAS expander chip arranged in the internal of the SAS expander, the method comprising:
receiving commands sent from the host PC using the SAS interface connector; enabling the smart port in response to a first control command sent from the host PC; reading status information from the SAS expander chip through the smart port in response to a status reading command sent from the host PC, and sending the read status information back to the host PC for analyzing; and obtaining detailed fault information from the SAS expander chip through the smart port in response to a detailed fault information obtaining command sent from the host PC, and sending the obtained detailed fault information back to the host PC for debugging.