How many servers does the Avaya Aura Communication Manager (CM) High Availability Duplex configuration have?

Question

Options

• ATwo servers (1 Active + 1 Standby)
• BTwo servers (2 Active + 0 Standby)
• CFour servers (2 Active + 2 Standby)
• DThree servers (2 Active + 1 Standby)

• A
  4% (1)
• C
  4% (1)
• D
  92% (22)

Explanation

Option D is correct because the Avaya Aura CM High Availability (HA) Duplex configuration consists of three servers: two actively processing calls/traffic and one standby server ready to take over if an active server fails, providing both load distribution and redundancy simultaneously.

Why the distractors are wrong:

• A (2 servers, 1 Active + 1 Standby) describes a basic Simplex HA pair, not the full Duplex HA configuration - it lacks the second active server.
• B (2 servers, 2 Active + 0 Standby) describes a load-balanced pair with no failover protection, which is not a true HA design.
• C (4 servers, 2 Active + 2 Standby) overstates the configuration - the HA Duplex does not require two dedicated standby servers; one is sufficient for the design.

Memory tip: Think of HA Duplex as "2+1" - two active servers doing the work, one standby on guard. The word Duplex can mislead you into thinking "just 2 servers," but the High Availability requirement adds that third standby server to complete the trio.

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