Dell Unity™ All Flash and Unity Hybrid Hardware Information Guide

Cabling for x4 connections

• Connect to back-end bus 1: To connect the first optional expansion DAE to back-end port 1 of the DPE to create back-end bus 1 (BE1) and designate this DAE as Enclosure Address 0 of this bus. We refer to the address of this enclosure as BE1 EA0 (1_0):
  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 the ports as follows:
     • Connect BE port 1 on SP A (the bottom storage processor of the DPE) to port A of link control card A (LCC A) on the right side of the DAE.
     • Connect BE port 1 on SP B (the top storage processor of the DPE) to port A of link control card B (LCC B) on the left side of the DAE.
• Connect to back-end bus 0: To connect the second optional expansion DAE to the DPE expansion port 0 to extend back-end bus 0 (BE0) and designate this DAE as Enclosure Address 1 of this bus. We refer to the address of this enclosure as BE0 EA1 (0_1):
  1. Label a pair of mini-SAS HD cables using the orange labels shown here.

     Expansion port cable labeling details			Primary port cable labeling details
     Label part number	Label	Port	Label part number	Label	Port
     046-001-561		SP A SAS 0	046-021-010		LCC A Port A
     046-003-489		SP B SAS 0	046-021-011		LCC B Port A

  2. Connect the ports as follows:
     • Connect BE port 0 on SP A (the bottom storage processor of the DPE) to port A of link control card A (LCC A) on the right side of the DAE.
     • Connect port 0 on SP B (the top storage processor of the DPE) to port A of link control card B (LCC B) on the left side of the DAE .
• Connect to the 4-port SAS back-end I/O module: To connect the DAE to a BE port in the SAS I/O module of the storage processor, cable the DAE to the first available port in the 12-Gb/s SAS I/O module. Use the same port on each storage processor's SAS I/O module. This SAS I/O module can be used to create back-end bus 2 through 5, (BE2 through BE5):
  NOTE:The optional back-end 12-Gb/s SAS module is not supported on all Unity storage systems.

  NOTE:Adding a new 12-Gb/s SAS I/O module requires a coordinated restart of the array. Refer to Adding an optional I/O module for more information.
  1. Label a pair of mini-SAS HD cables using the appropriate labels (black, green, brown, or blue) shown here.

     Expansion port cable labeling details			Primary port cable labeling details
     Label part number	Label	Port	Label part number	Label	Port
     046-005-679		SP A A0 PORT 0	046-021-16		LCC A Port A
     046-005-718		SP B B0 PORT 0	046-021-017		LCC B Port A
     046-005-711		SP A A0 PORT 1	046-021-018		LCC A Port A
     046-005-719		SP B B0 PORT 1	046-021-019		LCC B Port A
     046-005-935		SP A A0 PORT 2	046-021-020		LCC A Port A
     046-005-937		SP B B0 PORT 2	046-021-021		LCC B Port A
     046-005-936		SP A A0 PORT 3	046-021-022		LCC A Port A
     046-005-938		SP B B0 PORT 3	046-021-023		LCC B Port A

  2. For SP A, connect the DAE cable to the lowest available port in the SAS module in the bottom storage processor of the DPE to port A on link control card AA/A (LCC A) on the right side of the DAE.
  3. For SP B, connect the DAE cable to the lowest available port in the SAS module in the top storage processor of the DPE to port A on link control card BB/B (LCC B) on the left side of the DAE.

Example