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Zorluk: KolayResilience, High Availability, and Redundancy

A systems administrator is configuring a critical database server to eliminate single points of failure at both the power source and internal storage levels. Which of the following hardware and physical redundancy solutions directly satisfy these resilience requirements? (Select TWO.)

  1. Dual power supplies connected to independent Uninterruptible Power Supply (UPS) unitsCevap
  2. RAID 1 mirrored disk configurationCevap
  3. C
    Daily off-site tape data backups
  4. D
    Inline Web Application Firewall deployment

Cevap

The correct solutions are installing dual power supplies connected to independent Uninterruptible Power Supply (UPS) units and utilizing a RAID 1 mirrored disk configuration.
High availability and hardware resilience require immediate, real-time failover mechanisms for physical components. Dual power supplies connected to separate UPS circuits ensure continuous electrical power if one power path fails. A RAID 1 mirrored drive setup maintains real-time data access and system operation if a physical hard drive fails.

Adım Adım Çözüm

1
Identify the power redundancy requirement
Dual power supplies plugged into separate UPS units ensure continuous power delivery even if one circuit or power module fails.
Eliminates power supply unit and utility circuit failures as single points of failure.
2
Identify the storage redundancy requirement
RAID 1 duplicates data across two drives in real time, maintaining system availability if one disk fails.
Provides real-time storage fault tolerance without interrupting system operations.

Anahtar Kavram

Real-Time Hardware Fault Tolerance and Redundancy
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Konular

Resilience, High Availability, and Redundancy

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