IBM Power Series Handbook page 169

Machine type and model number in a location code
Utttt.mmm.sssssss-A1
Note: The mmm or ccc number might not be displayed on all location codes for all servers. If the mmm value is not
displayed, the location code is displayed in one of the following forms:
v Utttt.sssssss-A1
v Uffff.sssssss-A1
The location code is hierarchical; that is, each location identifier in the string represents a physical part.
The order (from left to right), in which each identifier is shown, allows you to determine which parts
contain other parts in the string.
The dash (-) separator character represents a relationship between two components in the unit. In the
example of the fan, whose location code is Un-A1, the dash shows that the fan (A1) is contained in the
base unit (or Un). Modules, adapters, cables, and devices are all parts that are plugged into another part.
Their location codes always show that they are plugged into another part as components of the server.
Another example follows:, Un-P1-C9 is a memory DIMM, with memory DIMM (C9) plugged into a
backplane (P1), which is inside the unit (Un).
Note: For devices, certain error conditions might cause an IBM i device to display the device location in
an AIX format.
Table 45. Unit type and locations
Unit type (Utttt)
U5886.001
Location code labels
The location code label represents a physical part of the server. The following table describes the prefixes
of location code labels.
Note: These labels apply to system units only.
Table 46. Prefixes of location code labels for system units
Prefix Description
A Air-moving device
C Card connector
D Device
E Electrical
L Logical path SAS target
N Horizontal placement for an empty rack location
P Planar
T Port
U Unit
V Virtual planar
W Worldwide unique ID
X EIA value for an empty rack location
Y Firmware FRU
Link to location information
Locations
Feature codes and sequence numbers in a location code
Uffff.ccc.sssssss-A1
Example
Fan, blower
IOP, IOA, DIMM, processor card
Diskette, control panel
Battery, power supply, ac charger
Integrated drive electronics (IDE) address, Fibre
Channel LUN
System backplane
Finding parts, locations, and addresses
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