Logical partition identifier

The logical partition identifier (ID) is used as the third and fourth hexadecimal digits of the operand stored by the Store CPU ID instruction for each CP in the LP. Even though at most 85 (decimal) logical partitions can be defined for models ME1 and ML1 (40 for models ME2 and MER), valid identifiers for LPs are X'00' through X'7F'. The LP identifier must be unique for each active LP.

Use the Customize/Delete Activation Profiles task to open a reset or image profile to define the LP identifier for an LP. The Partition identifier field is located on the General page for the LP. (See Figure 1).