IBM RS/6000 manual Disk Drive Module Slot Isolated from the SSA Adapter

If	two	or	more	disk	drive		modules		are turned off, fail, or		are
some	modules		might become isolated from the SSA adapter.
The	following		diagram		shows	that		the	disk drive modules in slots		2
The disk drive module in slot 1 can									communicate with	the using	syst
connector		A1	of the SSA adapter. The disk drive module in slots								5 a
municate with the using system								only	through connector A2 of the		SSA
disk	drive		module	in	slot	3	is	isolated from the SSA		adapter.

Chapter 7. Using the Service7-29Aids