A customer wants to monitor a remote datacenter using an existing vRealize Operations Manager cluster. The round-trip time (RTT) between datacenters is 150 ms. Which type of node should be deployed?

Question

Options

• ARemote Collector node
• BReplica node
• CData node
• DWitness node

• A
  81% (21)
• B
  12% (3)
• C
  4% (1)
• D
  4% (1)

Explanation

A Remote Collector node is the right choice when high network latency exists between sites. VMware recommends deploying a Remote Collector when RTT exceeds 10 ms - at 150 ms, a Remote Collector is required because it gathers and preprocesses metrics locally before sending compressed data back to the main cluster, preventing timeouts and data loss caused by latency.

Why the distractors are wrong:

• B. Replica node - provides high availability and load balancing for the primary cluster; it's not designed for remote/high-latency environments.
• C. Data node - expands cluster capacity (storage/processing) but must be co-located with the cluster due to tight, low-latency communication requirements.
• D. Witness node - used in stretched clusters to break ties during failover scenarios; it has no data collection role.

Memory tip: Think "Remote problem → Remote Collector." If the word remote or latency appears in the scenario, the answer is almost always the Remote Collector node - it's the only node type purpose-built to bridge geographically separated sites.

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