Dell Unity™ All Flash and Unity Hybrid Hardware Information Guide

Cabling an expansion DAE to an existing DAE to extend a back-end bus

Connect the optional expansion DAE to the last installed DAE in the back-end bus to extend to the new DAE.

About this task

Use the following illustration to complete this cabling task:

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.

1. Label a pair of mini-SAS HD cables using the appropriate labels (orange, blue, lack, green, brown, or cyan) shown here.
   Typically, DAEs connect to other DAEs using 1-meter cables.

   Expansion port cable labeling details			Primary port cable labeling details
   Label part number	Label	Port	Label part number	Label	Port
   046-004-455		LCC A Port B	046-004-455		LCC A Port A
   046-004-463		LCC B Port B	046-004-463		LCC B Port A
   046-004-456		LCC A Port B	046-004-456		LCC A Port A
   046-004-464		LCC B Port B	046-004-464		LCC B Port A
   046-004-457		LCC A Port B	046-004-457		LCC A Port A
   046-004-465		LCC B Port B	046-004-465		LCC B Port A
   046-004-458		LCC A Port B	046-004-458		LCC A Port A
   046-004-466		LCC B Port B	046-004-466		LCC B Port A
   046-004-459		LCC A Port B	046-004-459		LCC A Port A
   046-004-467		LCC B Port B	046-004-467		LCC B Port A
   046-004-460		LCC A Port B	046-004-460		LCC A Port A
   046-004-468		LCC B Port B	046-004-468		LCC B Port A

2. Connect the existing DAE to the expansion DAE to extend that back-end.

   If you have additional DAEs, add labels to the mini-SAS HD to mini-SAS HD cables and use those cables to extend the bus. For more information about cabling additional DAEs, see the associated Hardware Information Guide.

   1. Connect port B on the link control card A (LCC A) of the lower-numbered DAE to port A on the link control card A (LCC A) of the higher-numbered DAE. []
      LCC A is located on the lower portion of the DAE.
   2. Connect port B on the link control card B (LCC B) of the lower-numbered DAE to port A on the link control card B (LCC B) of the higher-numbered DAE. []
      LCC B is located on the upper portion of the DAE.