DS8000 Service Documentation Version 7.5

Installing and testing the Rack-2 I/O enclosures

Procedure

  1. At the front of Rack-2, ensure the power input cables to the I/O enclosure power supplies at the bottom of the rack have been disconnected.
    Note: This should have been completed in the "Disconnecting Rack-2 I/O enclosure power" section.
  2. This step shows an overview of the Rack-2 to Rack-1 PCIe and SPCN cable routing. Do not route or connect the cables until directed in later steps.
    • The PCIe cables  1  are thick. The SPCN cables  2  are thin. See Figure 1 and Figure 2.
    • On a raised floor, the cables are routed down through the tile cutouts and underneath the floor.
    • On a non-raised floor, the cables are routed beneath the racks.
    Figure 1. Rack-1 Mechanical routing of the PCIe and SPCN cables (rack-to-rack)
    Rack-1 Mechanical routing of the PCIe and SPCN cables
    Figure 2. Rack-2 Mechanical routing of the PCIe and SPCN cables (rack-to-rack)
    Rack-2 Mechanical routing of the PCIe and SPCN cables (rack-to-rack)
  3. At the rear of Rack-1 and Rack-2 remove the tailgate frame bracket.
    1. Remove the two screws Callout label 2 as shown in Figure 3.
    2. Loosen but do not remove the two top screws Callout label 1.
    3. Slide the bracket out. This allows you access to the tailgate cable retention hardware when you install cables later in this installation.
    Figure 3. Tailgate frame bracket
    Tailgate frame bracket
  4. Observe the rear of Rack-2 and Rack-1 to determine the location of the Rack-1 to Rack-2 PCIe cable and SPCN cable bundle.
    1. Use the first column of Table 1to find the condition that applies.
    2. Use the third column to continue the installation.
      Table 1. Location of PCIe and SPCN cable bundle
      If the PCIe and SPCN cable bundle is: You will be directed to route and connect the loose end of the cable bundle: Go to:
      Coiled and pre-installed in Rack-1 (see Figure 4) To Rack-2 PCIe and SPCN cable bundle is preinstalled in Rack-1
      Coiled and pre-installed in Rack-2 (similar to Figure 4 To Rack-1 PCIe and SPCN cable bundle is preinstalled in Rack-2
      Coiled and not pre-installed in Rack-1 or Rack-2 To both Rack-1 and Rack-2 PCIe cable bundle is not preinstalled in Rack-1 or Rack-2
      Figure 4. PCIe and SPCN cable bundle pre-installed in Rack-1
      PCIe and SPCN cable bundle pre-installed in Rack-1, loose end shipped in a coil
      Note: PCIe and SPCN cable bundle may be shipped coiled or secured around the inside walls of the rack.