Routing and connecting the expansion rack SAS cables

About this task

You are here to route and connect SAS cables from one or more high-performance flash enclosure pairs in Rack-2 or Rack-3 to the associated I/O enclosure device adapter card, SAS (flash) pair in Rack-1 or Rack-2.

Procedure

  1. Observe the rear of the Model 88E expansion rack you are installing (Rack-2 or Rack-3). Note which high-performance flash enclosures are present.

    Use Table 1, Figure 1, and Figure 2 to determine whether the required device adapter card, SAS (flash) pairs are present or available to install in Rack-1 or Rack-2.

    Refer to Figure 4 and Figure 5, if needed.
    Note: You checked for these adapters in the task Determining whether new and existing racks are compatible.

    You will now install any adapters that are needed and not already present.

    Table 1. Determining whether Rack-1 and Rack-2 contain the necessary DA card, SAS (flash) pairs to support Rack-2 or Rack-3 (Model 88E) high-performance flash enclosures
    If the new expansion rack has a high-performance flash enclosure in location: (see Figure 1) A DA card, SAS (flash) pair must be present or available for installation in Rack-1 I/O enclosure locations: (see Figure 1 and Figure 2 ) A DA card, SAS (flash) pair must be present or available for installation in Rack-2 I/O enclosure locations: (see Figure 1 and Figure 2)
    Rack-2: R2-F02

    R1-XI1 Slot C3

    R1-XI2 Slot C6

    (DA pair 8)

    		 Not applicable
    Rack-2: R2-F04

    R1-XI3 Slot C3

    R1-XI4 Slot C6

    (DA pair 10)

    		 Not applicable
    Rack-2: Any number of high-performance flash enclosures in locations R2-F05 through R2-F12. No additional interfaces required No additional interfaces required
    Rack-3: R3-F02 Not applicable

    R2-XI1 Slot C6

    R2-XI2 Slot C3

    (DA pair 13)
    Rack-3: R3-F04 Not applicable

    R2-XI3 Slot C6

    R2-XI4 Slot C3

    (DA pair 15)
    Rack-3: R3-F06 Not applicable

    R2-XI1 Slot C3

    R2-XI2 Slot C6

    (DA pair 12)
    Rack-3: R3-F08 Not applicable

    R2-XI3 Slot C3

    R2-XI4 Slot C6

    (DA pair 14)
    Rack-3: R3-F10

    R1-XI1 Slot C6

    R1-XI2 Slot C3

    (DA pair 9)

    		 Not applicable
    Rack-3: R3-F12

    R1-XI3 Slot C6

    R1-XI4 Slot C3

    (DA pair 11)

    		 Not applicable
    Figure 1. Rack 1-3 storage enclosure and I/O enclosure location codes (Models 988, 88E all-flash) (rear view)
    Rack 1-3 storage enclosure and I/O enclosure location codes (Models 988, 88E all-flash) (rear view)
    Figure 2. I/O enclosure locations (rear) (models 98x)
    I/O enclosure locations (rear) (models 98x, 8xE)
  2. Install any adapters that are needed and not already present in Rack-1 or Rack-2. See Table 1, Figure 2, Figure 3, and Figure 4.
    1. Ensure the blue levers  1  are open on the card. See Figure 3.
    2. Slide the card in and the latch the two blue levers  2 .
      Figure 3. I/O enclosure adapter retention levers
      I/O enclosure adapter retention levers
  3. Find and uncoil the SAS cables at the rear of the expansion rack being installed.
  4. Determine the destination rack and I/O enclosure for each SAS cable.
    1. Find the location code label at the free end of each SAS cable.
    2. Refer to Figure 4 and Figure 5 to translate the destination I/O enclosure location.
    Figure 4. Point-to-point cabling diagram for storage enclosure Flash PCIe / SAS cables (Models 988, 88E, rear view, racks 1, 2)
    Point-to-point cabling diagram for storage enclosure Flash PCIe / SAS cables (Models 988, 88E, rear view, racks 1, 2)
    Figure 5. Point-to-point cabling diagram for storage enclosure Flash PCIe / SAS cables (Models 988, 88E, rear view, rack 3)
    Point-to-point cabling diagram for storage enclosure Flash PCIe / SAS cables (Models 988, 88E, rear view, rack 3)
  5. Route the SAS cables to the destination rack.
    1. Do not connect the SAS cables to the I/O enclosure device adapter cards until directed later in this procedure.
    2. Route each cable  1  to the destination rack through the rack to rack holes at the upper rear of each rack. See and Figure 6 and Figure 7.
      Figure 6. Routing remote power control cables and optical cables between racks
      Note: Models 980 and 98B shown, routing for other models is similar
      Routing remote power control cables and FC-AL cables between racks
      Figure 7. Routing rack-to-rack power control and optical cables across a rack (earlier model shown, routing for models 98x and 8xE similar)
      Routing rack-to-rack power control and FCAL cables on top of the sheet metal tray
  6. Route the SAS cables to the destination I/O enclosures.
    1. Do not connect the SAS cables to the I/O enclosure device adapter cards until directed later in this procedure.
    2. SAS cables that will connect to an I/O enclosure on the left side of the rack are routed down the left side of the rack.
      • Left side cables have "XI1" or "XI3" in the location code (for example, Rx-XI3-P1-Cx-Tx), or the second character in the connection designator is uppercase (for example, 10A1).
    3. SAS cables that will connect to an I/O enclosure on the right side of the rack are routed down the right side of the rack.
      • Right side cables have "XI2" or "XI4" in the location code (for example, Rx-XI4-P1-Cx-Tx), or the last character in the connection designator is lowercase (for example, 10a1).
  7. Plug the SAS cables into the connectors on the I/O enclosure device adapter cards as indicated on the cable labels. Refer to Figure 8 and Figure 9 for connector locations.
    Figure 8. I/O enclosure locations (rear)
    Image that shows I/O enclosure locations (rear)
    Note: Enclosures 1B1, 1B2, 2B1, and 2B2 are not present in models 980, 984 (except all-flash), 98B, 84E.
    Figure 9. I/O enclosure locations (rear) (models 98x, 8xE)
    I/O enclosure locations (rear) (models 98x, 8xE)
  8. Use existing cable ties to secure the cables neatly.
  9. Continue to the next section.