An administrator is connecting two MX840c to an MX5016s. The MX5016s is configured in Enclosure Assigned mode. What should the requirements of this mode be to avoid configuration issues?

Question

Options

• AMX745P with a cluster aware OS
• BMX745P with no OS restrictions
• CHBA330MMZ with no OS restrictions
• DHBA330MMZ with a cluster aware OS

• A
  19% (4)
• B
  10% (2)
• C
  5% (1)
• D
  67% (14)

Explanation

Option D is correct because the MX5016s in Enclosure Assigned mode uses SAS-based connectivity, requiring the HBA330MMZ (a SAS Host Bus Adapter) in each MX840c compute sled to communicate with the storage sled. Additionally, because Enclosure Assigned mode allows the storage to be shared across multiple compute sleds simultaneously, a cluster-aware OS is mandatory to manage concurrent access and prevent data corruption.

Why the distractors fail:

• A & B (MX745P): The MX745P is a network switch/fabric expansion module, not a storage connectivity component - it has nothing to do with SAS storage access.
• C (HBA330MMZ, no OS restrictions): The right hardware, but wrong OS requirement. Shared storage across compute sleds without a cluster-aware OS risks split-brain scenarios and data corruption.

Memory tip: Use the phrase "HBA for SAS, Cluster for Sharing" - when a storage sled is assigned to an enclosure (shared), you need an HBA to physically talk to SAS drives, and a cluster-aware OS to safely share them.

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