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Dell Unity™ All Flash and Unity Hybrid Hardware Information Guide

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Cabling the first optional DAE to create back-end bus 1

Connect the first optional expansion DAE to port 1 of the DPE to create back-end bus 1 (BE1) and designate this DAE as enclosure 0 of this bus. We refer to the address of this enclosure as BE1 EA0 (1_0).

Prerequisites

To prepare for this cabling task:

  • Locate the mini-SAS HD cables to be used to connect to the newly installed expansion DAE.

    Typically these cables are 2-meters long. You use longer cables, typically 5-meters or 8-meters, to connect enclosures located in different racks. Cables are shipped without labels attached. The cables and ports are not colored.

  • Locate the sheet of cable labels provided.

Orient the cable connectors as described in the procedure that follows, making sure that you do NOT connect:

  • A DAE expansion port 0 to another expansion port 0.
  • Any A-side ports to B-side ports.

About this task

Use the following illustrations to complete this cabling task:

Figure 1. Example: DPE to DAE BE1 enclosure 0

DPE to 25-drive DAE SAS cabling

DPE to 15-drive DAE SAS cabling

NOTE:When cabling the 15-drive DAE LCC SAS ports, ensure that the cables do not overlap behind the DAE. The illustration above demonstrates the proper method for cabling to the DAE LCC SAS ports.

Steps

  1. Label a pair of mini-SAS HD cables using the blue labels shown here.
    Expansion port cable labeling details Primary port cable labeling details
    Label part number Label Port Label part number Label Port
    046-001-562 SP A SAS 1 046-021-012 LCC A Port A
    046-003-750 SP B SAS 1 046-021-013 LCC B Port A
  2. Connect each SP to the first optional DAE to create BE1 EA0.
    NOTE:Neither connector on the mini-SAS HD cable has a symbol to indicate input or output.
    1. Connect port 1 on SP A in the bottom slot in the DPE to port A on the link control card A (LCC A) at the bottom of the DAE. []
    2. Connect port 1 on SP B in the top slot in the DPE to port A on the link control card (LCC B) at the top of the DAE. []

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