Which ECS protection configuration ensures data availability across multiple geographic locations?

Question

Options

• ALocal RAID configurations
• BSingle-region data replication
• CCross-region replication
• DPeriodic backup to tape

• A
  3% (1)
• C
  91% (29)
• D
  6% (2)

Explanation

Cross-region replication (C) is correct because it automatically copies data to storage nodes in geographically separate locations, ensuring data remains accessible even if an entire region experiences an outage or disaster - directly satisfying the "multiple geographic locations" requirement.

Why the distractors fail:

• A (Local RAID): RAID protects against individual disk failures within a single node or site - it provides no geographic separation whatsoever.
• B (Single-region replication): Replicating within one region keeps all copies in the same geographic zone, so a regional disaster still takes everything down.
• D (Periodic backup to tape): Tape backups are offline, infrequent, and slow to restore - they don't provide availability, only a recovery option with significant downtime.

Memory tip: Think of the key phrase in the question - "multiple geographic locations." Only the answer with "cross-region" literally contains geography in its name. If the question mentions geography, disaster recovery, or regional outages, cross-region replication is almost always the right pick.

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