You receive the error shown below on a FAS2750 HA pair.
Mon Jun 24 00:27:30 UTC [NetappA: scsi_cmdblk_strthr_admin: scsi.cmd.checkCondition:error]: Unknown device 0a.00.99:
Check Condition: CDB 0x12: Sense Data SCSI:hardware error - (0x4 - 0x44 0x0 0x0) (0).
The system is cabled as shown in the exhibit.
What should you do to clear the error?
The error message indicates an issue with a specific device path involving port 0a. The recommended troubleshooting steps for 'scsi.cmd.checkCondition' errors typically begin with re-seating or replacing the cable for the affected path. This is a simpler and quicker solution to try before moving on to potentially more intrusive fixes like replacing the controller. Therefore, replacing the cable connected to controller A's 0a port is the appropriate initial step to clear the error.
scsi.cmd.checkCondition errors reported for all the disks in the same path Applies to AFF A220 FAS systems Cause: Faulty SAS port in the controller Solution: Re-seat/replace the SAS cable for that path. If the issue remains, re-seat/replace the IOM for that path. If the issue remains, replace the controller with the SAS port for that path https://kb.netapp.com/Advice_and_Troubleshooting/Flash_Storage/AFF_Series/scsi.cmd.checkCondition_errors_reported_for_all_the_disks_in_the_same_path
But the first line in your solutions suggests replacing the SAS cable...
Re-seat/replace the SAS cable for that path. If the issue remains, re-seat/replace the IOM for that path. If the issue remains, replace the PCM with the SAS port for that path