SCF Reference Manual for the Storage Subsystem (G06.28+, H06.05+, J06.03+)

Recovery
Change either the primary SAC or the backup SAC so that they have different controller IDs.
The SCSI Bus IDs of the SACs on a ServerNet/DA are always 6 or 7. The ID numbers are
assigned in a checkerboard fashion, so that these values will always be different:
• The IDs of the same SAC number on two adjacent boards
• The IDs of adjacent SAC numbers on the same board
Storage Subsystem Error Messages 361