In the context of ECS data management, which configurations are essential for designing resiliency against potential failure scenarios?

Question

Options

• AMulti-AZ deployments for critical data
• BSingle-instance storage for cost-efficiency
• CRegularly tested backup and restore procedures
• DAutomatic failover mechanisms

• A
  78% (21)
• B
  22% (6)

Explanation

Designing resiliency in ECS data management requires layered protection: Multi-AZ deployments (A) eliminate single points of failure by distributing workloads across geographically isolated Availability Zones, so one AZ outage doesn't take down your service. Tested backup and restore procedures (C) are essential because an untested backup is an unreliable backup - the "regularly tested" qualifier is critical, since backups that fail during restore provide zero resiliency. Automatic failover (D) ensures recovery happens without human intervention, minimizing downtime when a failure actually occurs.

Option B is wrong because single-instance storage is the opposite of resiliency - it introduces a single point of failure and prioritizes cost over availability, which is an anti-pattern for resilient architectures.

Memory tip: Think of resiliency as three pillars - Spread it (Multi-AZ), Prove it works (tested backups), and Recover it automatically (failover). Any answer that consolidates or centralizes resources (like "single-instance") breaks resiliency and should be eliminated immediately.

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