Model D10 Location Codes; Aix And Physical Location Code Table - IBM pSeries 7311 D10 Service Manual

Model D10 Location Codes

This system (processor subsystem and attached I/O subsystems) use physical location codes in
conjunction with AIX location codes to provide mapping of failing field replaceable units (FRUs). The
location codes are produced by the processor subsystem's firmware and AIX. For information about how to
read a location code, see the service guide for the processor subsystem to which your I/O subsystem is
connected.

AIX and Physical Location Code Table

This section covers the AIX and Physical Location Code tables for the Model D10.
The tables in this section contain the location codes for I/O subsystems when they are attached to the
system unit. In the tables, the location code for the I/O subsystem number is represented by dd. The first
time that an installed system is powered on, the I/O subsystems are numbered. For example, if a system
is first powered on with eight I/O subsystems connected, the dd value for the subsystems should be
numbered from 2 through 9.
Note: If the system was powered on with I/O subsystems connected before delivery to the customer, the
I/O subsystem location codes for the connected I/O subsystems are permanently set.
If at a later time, an I/O subsystem is removed from the system and a different I/O subsystem is
substituted, the substitute is assigned the next higher number available for its value of dd, which in the
earlier example, is 10. If the original I/O subsystem is reinstalled in the system configuration, the system
uses the original dd value for the I/O subsystem.
To keep the system from renumbering the I/O drawer when an I/O backplane is replaced, the VPD module
from the old I/O backplane must be moved over to the new I/O backplane.
The following diagram defines each part of a location code.
Ux.dd-xx-yy
| | | |
| | | |
| | | yy This code is used for the next component (yy, yy, yy, ...)
| | xx This code is used for the next component (Px, Fx, Vx, ...)
| dd This code is the location code for the I/O drawer (2 to 63)
Ux This code normally identifies the rack in which a drawer is installed.
The x will always be zero (0) for this system.
14 Eserver pSeries 7311 Model D10 and Model D20 Service Guide