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8.3.2 Points of concern during reduction


8.3.2 Points of concern during reduction
Before removing the SPARC M10-4S, check the following items, which are points of concern.
  1. If you stop a PPAR and remove the SPARC M10-4S belonging to the PPAR, logical domain configuration information is switched to factory-default the next time that the PPAR is powered on.
    In that case, reconfigure the logical domains by referring to the logical domain configuration information in the XML file saved at the system configuration time.
  2. Multiple SPARC M10-4S units cannot be released from the system by using the initbb command at the same time. Do this work on one unit at a time.
  3. The serial number of the chassis of either the master XSCF or standby XSCF is used as the system serial number. If the serial number of the standby chassis is being used as the system serial number, the initbb command cannot release the standby chassis. In this case, execute the switchscf command to switch the master XSCF.
  4. For the initialization of the chassis of the master XSCF, perform that work at the end.
    Execute the restoredefaults -c factory command to return to the factory defaults, including the CPU Activation key information. Perform this work with a serial connection to the master XSCF.
    For XCP 2041 or later, execute the restoredefaults -c factory -r activation command.
    To add a removed chassis into another system, you need to reinstall the key during the initial setup of the XSCF after the addition of the chassis.
  5. The physical partition number must match the BB-ID value of one of the SPARC M10-4S units in the system.
    Therefore, if there is a physical partition with the same number as that of the BB-ID of the SPARC M10-4S to be removed, stop that physical partition before removing the unit.
    If the removed SPARC M10-4S unit will not be used in the system, it will not be possible to use the corresponding physical partition. So reconfigure the physical partition with a different physical partition number.
Notes on use of dynamic reconfiguration (DR) for the physical partition
Note - When using the dynamic reconfiguration function for the physical partition (PPAR DR), check the contents of "2.5 Dynamic Reconfiguration Conditions and Settings" in the Fujitsu SPARC M12 and Fujitsu M10/SPARC M10 Domain Configuration Guide beforehand.
  1. The command with the -c unassign option specified cannot release a system board (PSB) from a physical partition where the PPAR DR function is disabled, while the physical partition is operating. Execute the setpparmode command beforehand to set the PPAR DR setting to "on".
    For details, see "A.1 Updating a System That Does Not Support Physical Partition Dynamic Reconfiguration to One That Does Support It" in the Fujitsu SPARC M12 and Fujitsu M10/SPARC M10 Domain Configuration Guide.
  2. To release a system board (PSB) from the physical partition, execute the deleteboard command with the -c unassign option specified. After being released from the physical partition by the command with the -c unassign option specified, the system board (PSB) enters the system board pool.
  3. When the system board (PSB) is targeted for release from the physical partition, the free resources in the physical partition are used to move the logical domains that use the resources of the system board (PSB).
    According to the status of these free resources, you can specify the method of securing the resources used to move the logical domains by specifying the -m option of the deleteboard command.
    The following shows the functions when the -m option of the deleteboard command is specified.
    - -m unbind=none is specified

     Obtains resources for the move from available resources. When the command cannot secure the resources, it causes the release to fail.

    - -m unbind=resource is specified

     Obtains resources for the move from available resources. If even those resources are insufficient, it secures resources from each logical domain.

    - -m unbind=shutdown is specified

     Obtains resources for the move from available resources. If even those resources are insufficient, it secures resources from each logical domain. If the resources are still insufficient, it shuts down any one of the logical domains.
  4. If SPARC64 X processors and SPARC64 X+ processors are mixed in the CPU configuration of the physical partition with the CPU operational mode set to "compatible" mode, the CPU operates by using the functions of the SPARC64 X processor. Also if SPARC64 X processors are removed from this physical partition and only SPARC64 X+ processors are left in the CPU configuration of the physical partition, the CPU operates by using functions of the SPARC64 X processor.
    To use expanded functions of the SPARC64 X+ processor, execute the setpparmode command to change the CPU operational mode to auto.
Important - Be sure to save the logical domain configuration information before changing the CPU operational mode.
Since the logical domain configuration information that has been saved beforehand is required for reconfiguration of the logical domain, be sure to save the data before changing the CPU operational mode with the setpparmode command. For details on how to save and restore logical domain configuration information, see "1.7.3 How to Save/Restore the Logical Domain Configuration Information and the OpenBoot PROM Environment Variable" in the PCI Expansion Unit for Fujitsu SPARC M12 and Fujitsu M10/SPARC M10 Service Manual.
Table 8-5 shows the relationship between the physical partition configuration, setting value of the CPU operational mode, CPU operation, CPU configuration after the removal, and CPU operation after the removal.
Table 8-5  Relationship between the physical partition configuration, setting value of the CPU operational mode, CPU operation, CPU configuration after the removal, and CPU operation after the removal
Physical partition configuration Setting value of CPU operational mode CPU operation Physical partition configuration
after removal
CPU operation after removal
SPARC64 X auto or compatible Operation by using SPARC64 X functions SPARC64 X Operation by using SPARC64 X functions
SPARC64 X+ auto Operation by using SPARC64 X+ functions SPARC64 X+ Operation by using SPARC64 X+ functions
SPARC64 X+ compatible Operation compatible with the SPARC64 X SPARC64 X+ Operation compatible with the SPARC64 X
SPARC64 X+ and X mixed auto Operation compatible with the SPARC64 X SPARC64 X+ Operation compatible with the SPARC64 X
before PPAR restart
Operation by using SPARC64 X+ functions
after PPAR restart
SPARC64 X+ and X mixed compatible Operation compatible with the SPARC64 X SPARC64 X+ Operation compatible with the SPARC64 X
SPARC64 X+ and X mixed auto or compatible Operation compatible with the SPARC64 X SPARC64 X Operation by using SPARC64 X functions