Position Possible failing item DSA (BBBBCcbb) Unit address
Note: IOA and device
DSA’s will not follow the
rules below if the IOA is
manually reassigned after
IPL.
CB1 Service processor 0001-70-00 FFFFFFFF
C01 IOP 0001-20-00 FFFFFFFF
C02 Communication, workstation
IOA
0001-20-00 E2FFFFFF
C03 Storage IOA 0001-20-00 4FFFFFFF
C04 Storage IOA 0001-20-00 6FFFFFFF
C04 Communication, workstation
IOA
0001-20-00 E6FFFFFF
C05 (IXS capable position) IOP 0002-20-00 FFFFFFFF
C06 (empty if IXS in C05) Storage IOA 0002-20-00 2FFFFFFF
C06 (empty if IXS in C05) Communication, workstation
IOA
0002-20-00 E2FFFFFF
C07 IOP 0002-23-00 FFFFFFFF
C07 Storage IOA 0002-20-00 3FFFFFFF
C07 Communication, workstation
IOA
0002-20-00 E3FFFFFF
C07 IXS attached IOA 0002-20-00 E003FFFF
C08 IOP 0002-24-00 FFFFFFFF
C08 Storage IOA The IOA has the same DSA
as the first IOP found in the
following list: C07, C05.
4FFFFFFF
C08 Communication, workstation
IOA
The IOA has the same DSA
as the first IOP found in the
following list: C07, C05.
E4FFFFFF
C08 IXS attached IOA The IOA has the same DSA
as the first IOP found in the
following list: C07, C05.
E004FFFF
C09 Storage IOA The IOA has the same DSA
as the first IOP found in the
following list: C08, C07,
C05.
6FFFFFFF
C09 Communication, workstation
IOA
The IOA has the same DSA
as the first IOP found in the
following list: C08, C07,
C05.
E6FFFFFF
C09 IXS attached IOA The IOA has the same DSA
as the first IOP found in the
following list: C08, C07,
C05.
E006FFFF
C11 (IXS capable position) IOP 0003-20-00 FFFFFFFF
C12 (empty if IXS in C11) Storage IOA 0003-20-00 2FFFFFFF
C12 (empty if IXS in C11) Communication, workstation
IOA
0003-20-00 E2FFFFFF
Analyze hardware problems 341