IBM 990 - Manual (Page 124)

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zSeries 990 Technical Guide
number of partitions defined in the RESOURCE statements in the IOCDS. It is unique for
each logical partition.
Logical partition identifier
The logical partition identifier is a number in the range from ‘00’ to ‘3F’. It is assigned by the
user on the image profile through the Support Element (SE) or the Hardware Management
Console. It is unique across the z990 and may also be referred to as the User Logical
Partition ID (UPID).
MIF Image ID (MIFID)
The Multiple Image facility enables channel sharing among logical partitions pertaining to the
same Logical Channel Subsystem.
The MIF Image ID is a number that is defined through Hardware Configuration Dialog (HCD)
or directly via the IOCP. It is a number that is specified in the RESOURCE statement in the
configuration definitions. It is in the range '1' to 'F' and is unique within an LCSS, but it is not
unique within the z990. Multiple LCSSs may specify the same MIF Image ID (the MIFID was
called the logical partition number in previous zSeries).
Logical partition name
This name is user defined through HCD or the IOCP and is the partition name in the
RESOURCE statement in the configuration definitions. The names must be unique across all
LCSSs defined for the z990.
Figure 4-2 summarizes all the identifiers and how they are defined, using a three LCSS
configuration example.
Figure 4-2 LCSS, logical partition, and identifiers
Specified in HMC
Image Profile
Specified in
HCD / IOCP
Assigned by
PR/SM at POR
LCSS0 LCSS3
TST1 PROD1 PROD2 TST3 TST4 PROD5
02 04 0A 22 35 3A
MIF ID
2
MIF ID
4
MIF ID
A
MIF ID
2
MIF ID
5
MIF ID
A
Logical Partition Name Logical
Partition Name
Logical Partition ID
Logical Partition Number
Specified in
HCD / IOCP
Specified in
HCD / IOCP
LCSS1
TST2 PROD3 PROD4
14 16 1D
MIF ID
4
MIF ID
6
MIF ID
D
Logical Partition Name
Logical Partition ID
Logical Partition Number
LCSS2
Logical
Partition ID
Log Part
Name
Log Part
ID
Log Part
Number
Logical Partition
Number