Installation and Migration Guide

|Reconfiguring IBM e(logo)server pSeries 690 logical partitions (LPARs)

|The IBM pSeries 690 is a multiprocessor server whose |processors, memory, and I/O slots can be logically partitioned into separate |machine images each running its own version of the operating system and SP |software. The system resources are assigned to logical partitions |(LPARs) through the Hardware Management Console (HMC). The server is |attached to the SP control workstation through an SP administrative Ethernet |LAN connection to the HMC. This connection is used by the PSSP Hardware |Monitor (hardmon) to control and monitor the server hardware and to |provide serial terminal access to each LPAR.

|As an SP-attached server or clustered enterprise server, the pSeries 690 is |represented as a frame. Each LPAR is represented in PSSP as a |node. The frame slot number of the LPAR is equivalent to the partition |ID assigned to that LPAR by the HMC. This slot number in turn is used |to derive the node number following standard PSSP frame-slot number to node |number conversion algorithms.

|Adding a new LPAR

|Adding a new LPAR to an existing pSeries 690 server attached to your SP or |clustered enterprise server system is similar to adding a new node to your SP |system. However, instead of having your CE physically connect the node |hardware to the system, you will need to use the HMC interface to create the |logical partition and assign resources to that partition. Once the |partition has been created, hardmon will automatically find the new |LPAR and a new node will be added to the SDR for that pSeries 690 |frame. Follow the instructions in Adding nodes noting the special instructions for pSeries 690 |servers in Step 2: Connect new nodes to the frame.

|Deleting an existing LPAR

|Deleting an existing LPAR from a pSeries 690 server attached to your SP or |clustered enterprise server system is similar to deleting a node from your SP |system. However, instead of having the CE physically disconnect the |node hardware from the system, you will need to use the HMC interface to |remove the LPAR from the server. Once the partition has been removed, |you will need to delete the node and related information from the SDR on the |control workstation as you do for all other nodes. Follow the |instructions in Deleting a frame, node, SP-attached server, or clustered enterprise server noting the special instructions for pSeries 690 servers in Step 6: Disconnect the node from the frame (optional).

|Adding Resources to an LPAR

|Adding resources to an existing LPAR on a pSeries 690 server attached to |your SP or clustered enterprise server system is similar to adding additional |hardware resources to a node on your SP system. When adding resources |to a previously-defined partition, PSSP will be impacted as follows: |

|processors: |Adding processors to an LPAR will be detected by PSSP the next time the |LPAR is booted. The PSSP node boot configuration code will detect the |new number of processors and update the node information in the SDR.
|memory: |Adding memory to an LPAR will not be detected by PSSP. This |information is not stored in the SDR.
|I/O: |Adding I/O slots to the LPAR may require additional PSSP node |configuration steps. If you are adding adapters which will be supported |and configured by PSSP, you will need to follow the steps for adding an |adapter to your SP node in Adding an adapter to a node. |

|To add resources to an LPAR, you will need to use the HMC interface. |The HMC interface can be started in one of the following ways: |

|Login directly to the HMC subsystem. This will automatically start |the GUI on the local HMC display.
|Manage the HMC subsystem through the remote WebSM session running on your |control workstation or other UNIX workstation that has connectivity to the |HMC.
|Launch a remote WebSM session to the HMC from the Hardware Perspective |running on your control workstation. |

|Refer to the Hardware Management Console for pSeries Operations |Guide for details on adding resources to an LPAR.

|Deleting Resources from an LPAR

|Deleting resources from an existing LPAR on a pSeries 690 server attached |to your SP or clustered enterprise server system is similar to removing |hardware resources from a node on your SP system. When deleting |resources from a previously-defined partition, PSSP will be impacted as |follows: |

|processors: |Removing processors from an LPAR will be detected by PSSP the next time |the LPAR is booted. The PSSP node boot configuration code will detect |the new number of processors and update the node information in the |SDR. A message will be written to the system log indicating that the |number of processors detected is less than the number of processors configured |for the node during the previous boot of the system.
|memory: |Reducing memory on an LPAR will not be detected by PSSP. This |information is not stored in the SDR.
|I/O: |Removing I/O slots from an LPAR may require additional PSSP node |configuration steps. If you are deleting adapters which were supported |and configured by PSSP, you will need to follow the steps for deleting an |adapter from your SP node in Deleting an adapter from a node. |

|To delete resources from an LPAR, you will need to use the HMC |interface. The HMC interface can be started in one of the following |ways: |

|Login directly to the HMC subsystem. This will automatically start |the GUI on the local HMC display.
|Manage the HMC subsystem through the remote WebSM session running on your |control workstation or other UNIX workstation that has connectivity to the |HMC.
|Launch a remote WebSM session to the HMC from the Hardware Perspective |running on your control workstation. |

|Refer to the Hardware Management Console for pSeries Operations |Guide for details on deleting resources from an LPAR.

|Changing modes of operation

|A pSeries 690 server has three separate modes of operation: |

|Full System Partition mode: |Also known as SMP mode. The pSeries 690 server is configured as a |single server with no logical partitioning. PSSP will recognize this |server as a single frame with a single node, logically located in frame slot |1.
|Logical Partition mode: |This system is logically partitioned with processor, memory, and I/O |resources distributed across from 1 to 16 logical machine images. PSSP |recognizes this as a single frame with multiple nodes, one node for each LPAR, |logically located in the frame slot corresponding to the partition ID for that |LPAR.
|Physical Partition mode: |This system is logically partitioned across physical hardware boundaries |to provide processor and memory affinity. To PSSP, this is identical to |Logical Partition mode. |

|To change the mode of operation between Full Partition mode and either |Logical Partition mode or Physical Partition mode on your pSeries 690 server, |you will need to reconfigure your PSSP system. Perform the following |steps: |

|Delete the original attached server frame and nodes. Follow the |instructions in Deleting a frame, node, SP-attached server, or clustered enterprise server.
|Change the mode of operation. This must be done using the HMC |interface. Since the frame has been deleted from PSSP, you will not be |able to use the Hardware Perspective to launch a remote WebSM session to the |HMC. You can start the HMC interface in one of the following |ways: |
- |Login directly to the HMC subsystem. This will automatically start |the GUI on the local HMC display.
- |Manage the HMC subsystem through a remote WebSM session running on your |control workstation or other UNIX workstation that has connectivity to the |HMC. |
Refer to Hardware Management Console for pSeries Operations |Guide for details on changing the mode of operation for your pSeries 690 |server.
|Add the new attached server frame and nodes. Follow the |instructions in Adding a frame, SP-attached server, or clustered enterprise server and Adding nodes. |

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