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4.3.3 Precautions for reduction


4.3.3 Precautions for reduction
Before performing reduction work, see "Checking the FRU status" in "4.2.2  Identifying a failure" to confirm that there is no problem with the chassis that is the reduction target.
Precautions for CPU memory unit upper or memory reduction
  1. When removing a CPU memory unit upper, mount the stored filler unit after removing the CPU memory unit upper.
  2. Remove the shortest PCIe cable that connects the CPU memory unit upper and CPU memory unit lower. However, you do not need to remove the three PCIe cables that are connected to the CPU memory unit lower.
  3. Removal of the CPU memory unit upper in a system where the I/O bus was reconfigured eliminates the root complex used in the CPU memory unit upper. Also, some PCIe slots can no longer be used. To enable use of the PCIe slots, "activate" the I/O bus reconfiguration function (*1). However, the I/O device path changes as a result, so you may need to reconfigure the logical domains.
  4. Observe the memory installation rules when you remove memory. For details, see "2.2.1  Memory installation rules."
*1 For details, see the section describing the setpparmode command in the Fujitsu SPARC M12 and Fujitsu M10/SPARC M10 XSCF Reference Manual.
Precautions for internal disk reduction
  1. When removing an internal disk, remove the internal disk and then mount the filler unit that has been stored in a safe place onto the empty slot.
Precautions for PCIe card reduction
  1. Release the multipath depending on the use of a PCIe card when performing active/hot maintenance or active/cold maintenance with PHP.
  2. For active removal using PHP, confirm that the card supports PHP as described in "Appendix A  Cards That Support PCI Hot Plug and Dynamic Reconfiguration" in the Fujitsu M10/SPARC M10 Systems PCI Card Installation Guide. For active removal combined with dynamic SR-IOV and the dynamic reconfiguration function for the PCIe end point, confirm the supported card as described in "Appendix B  Cards That Support SR-IOV" and "Appendix D  Cards That Support the Dynamic Reassignment Function for the PCIe End Point Device (PCIe Card)" in the same manual.
  3. When performing PCIe card removal, remove the PCIe card from the PCIe card cassette and then attach the filler that has been stored in a safe place.