During a requirement capture workshop, the customer expressed a plan to use Aria Operations Continuous Availability. The customer identified two datacenters that meet the network requirements to…

Question

Exhibit

Options

• ADatacenter A
• BDatacenter B
• CDatacenter C
• DDatacenter D

• A
  78% (47)
• B
  3% (2)
• C
  12% (7)
• D
  7% (4)

Explanation

VMware Aria Operations Continuous Availability (CA) is a feature in VMware Aria Operations (integrated with VMware Cloud Foundation 5.2) that provides high availability by splitting analytics nodes across two fault domains (datacenters) with a Witness Node in a third location to arbitrate in case of a split-brain scenario. The Witness Node has specific network requirements for latency and bandwidth to ensure reliable communication with the primary and replica nodes. These requirements are outlined in the VMware Aria Operations documentation, which aligns with VCF 5.2 integration. VMware Aria Operations CA Witness Node Network Requirements: Network Latency: The Witness Node requires a round-trip latency of less than 100ms between itself and both fault domains under normal conditions. Peak latency spikes are acceptable if they are temporary and do not exceed operational thresholds, but sustained latency above 100ms can disrupt Witness functionality. Network Bandwidth: The minimum bandwidth requirement for the Witness Node is 10Mbits/sec (10 Mbps) to support heartbeat traffic, state synchronization, and arbitration duties. Lower bandwidth risks communication delays or failures. Network Stability: Temporary latency spikes (e.g., during 20-second intervals) are tolerable as long as the baseline latency remains within limits and bandwidth supports consistent communication. Evaluation of Each Datacenter: Datacenter A: <30ms latency, peaks up to 60ms during 20sec intervals, 10Mbits/sec bandwidth Latency: Baseline latency is <30ms, well below the 100ms threshold. Peak latency of 60ms during 20- second intervals is still under 100ms and temporary, posing no issue. Bandwidth: 10Mbits/sec meets the minimum requirement.

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