Which DR features can deliver zero RPO? (Multiple choice)

Question

Options

• AHyperMetro
• BHyperReplication Synchronous
• CHyperReplication Asynchronous
• DSmartMigration

• A
  81% (13)
• C
  13% (2)
• D
  6% (1)

Explanation

Zero RPO means absolutely no data loss, which is only possible when every write is confirmed on the secondary site before the primary acknowledges it to the host. HyperMetro achieves this through an active-active architecture where data is written simultaneously to two sites, and HyperReplication Synchronous achieves it by holding each I/O until the remote copy confirms receipt - both guarantee that a failure can never result in lost writes.

HyperReplication Asynchronous is wrong because async replication acknowledges writes at the primary before they reach the secondary, creating a replication lag and a non-zero RPO. SmartMigration is wrong because it is a planned, non-disruptive data migration tool, not a continuous replication technology, so it offers no RPO guarantee in a disaster scenario.

Memory tip: Focus on the word "synchronous" - synchronous replication means the two sites move in lockstep, which is the only way to guarantee zero data loss. Any asynchronous method, by definition, introduces a gap.

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