What is the main type of traffic supported by ECS back-end switches in an EX500 cluster?

Question

Options

• AInternal Management
• BInternal Replication
• CProduction
• DExternal

• A
  93% (28)
• C
  3% (1)
• D
  3% (1)

Explanation

In the EX500 cluster architecture, ECS back-end switches are dedicated to Internal Management traffic - the node-to-node communication that keeps the cluster coordinated, including health monitoring, configuration synchronization, and administrative control plane signaling. This separation isolates sensitive management traffic onto a private, dedicated fabric away from user-facing networks.

Why the distractors are wrong:

• B (Internal Replication): Replication traffic is real in ECS, but it travels over a separate replication network path, not the back-end management switch fabric - making it a tempting but incorrect choice.
• C (Production): Production (client I/O) traffic is handled by the front-end switches, which face the external network and carry S3/object requests from clients.
• D (External): External traffic is synonymous with production client traffic and, like C, belongs on the front-end network, not the back-end.

Memory tip: Think "Back = Behind the scenes." The back-end switches stay hidden from clients and only speak internally for management purposes - front-end handles what clients see, back-end handles what the cluster manages itself with.

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