System information

Chapter 9. Migration of existing LPAR profiles to HMC 253
4. On the Work with Partitions screen, select Option 1, Display Partition Information.
5. Select Option 5, Display System I/O Resources.
6. Use the F6 Print Key to print a copy of the rack configuration. This printout contains all of
the information usually collected from the
Hardware Service Manager plus all of the
partition information.
9.1.2 Get a printout of your resource allocations
To document your resource allocations, perform the following steps:
1. Start SST by entering STRSST.
2. Log on using a valid Service Tools user ID and password.
3. From the Service Tools menu, select Option 5, Work with system partitions.
4. From the Work with System Partitions menu, select Option 1, Display partition
information.
5. Press F6 from the Display Partition Information menu to get a printout of your resource
allocation information. F6 prints information from each of the listed options on the Display
Partition Information menu.
6. Use the F12 key to logout of SST.
9.1.3 Review the resources in the Primary partition
Review the resources in the Primary partition. A Primary/P0 partition no longer exists in a
System i5 system at V5R3. If the Primary/P0 partition is migrated, it will be assigned the next
available partition number.
For example, a 4 LPAR system (P0, P1, P2, P3), P0 will be migrated as P4. Or in a 2
processor system (maximum is 10 LPAR per processor) with 20 LPAR (P0 through P19),
P0 will be migrated as P20. Care must be taken to assure that the new system is ordered with
sufficient resources to account for any loss of hardware resources as a result of the migration
(replace unsupported hardware like migrations towers, etc.). Planning is critical for customers
who use the Primary partition as a production partition. The best migration plan would
relocate the Primary partition resources to the new System i5 system intact so that a scratch
install is avoided.
9.1.4 Bus numbering
It is important to understand that the bus numbering of the system unit will change after the
upgrade. This is critical to preserve or to update logical partition configurations after the
migration. For example, let us consider an 810 to System i5 520 upgrade. The 810 system
unit has bus numbers 1 and 2. After the upgrade to the System i5 520, the new system unit
will contain buses 2 and 3. At installation time, the IBM Customer Service representative
(CSR) will take steps to prevent the re-numbering of the other existing buses.
9.1.5 Use the LVT tool to create a graphical worksheet
This task is optional but recommended. If you would like to create a graphical layout of your
partitioned system, use the
Logical Partitioning Validation Tool (LVT). The LVT is available
to assist the user in the design of LPAR systems and to provide an LPAR validation report
that reflects the user's system requirements while not exceeding LPAR recommend. This is
also a good method of inventorying your system and it provides a picture of slot layout and
usage.