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D-UN-OE-23 · Question #40

Refer to the exhibit. Which ports are used to connect DAEs to a Unity XT storage array?

The correct answer is A. 2. On Unity XT storage arrays, ports 2 are the designated back-end SAS ports used to connect DAEs (Disk Array Enclosures) to the Storage Processors (SPs), making option A correct - the exhibit typically highlights these as the specific physical connectors for DAE cabling on both…

Unity Concepts and Architecture

Question

Refer to the exhibit. Which ports are used to connect DAEs to a Unity XT storage array?

Exhibit

D-UN-OE-23 question #40 exhibit

Options

  • A2
  • B1
  • C3
  • D4

How the community answered

(30 responses)
  • A
    90% (27)
  • B
    7% (2)
  • D
    3% (1)

Explanation

On Unity XT storage arrays, ports 2 are the designated back-end SAS ports used to connect DAEs (Disk Array Enclosures) to the Storage Processors (SPs), making option A correct - the exhibit typically highlights these as the specific physical connectors for DAE cabling on both SP A and SP B.

Options B (port 1) and C (port 3) are incorrect because those ports serve different functions - port 1 is generally a front-end host connectivity port, and port 3 is not a standard DAE connection point in the Unity XT architecture. Option D (port 4) is similarly incorrect, as port 4 is either a front-end port or not present in standard DAE cabling diagrams for this platform.

Memory tip: Think "2 connects to the DAE" - the number 2 visually resembles a cable loop connecting enclosures, or simply remember that Unity XT uses back-end port 2 for DAE chaining, while ports 0 and 1 face the hosts.

Topics

#DAE#SAS connectivity#storage expansion#hardware ports

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