Chapter 15

High Availability and Disaster Recovery

This chapter covers the following topics related to Objective 3.3 (Explain high availability and disaster recovery concepts and summarize which is the best solution) of the CompTIA Network+ N10-008 certification exam:

  • Load balancing

  • Multipathing

  • Network interface card (NIC) teaming

  • Redundant hardware/clusters

    • Switches

    • Routers

    • Firewalls

  • Facilities and infrastructure support

    • Uninterruptible power supply (UPS)

    • Power distribution units (PDUs)

    • Generator

    • HVAC

    • Fire suppression

  • Redundancy and high availability (HA) concepts

    • Cold site

    • Warm site

    • Hot site

    • Cloud site

    • Active-active vs. active-passive

      • Multiple Internet service providers (ISPs)/diverse paths

      • Virtual Router Redundancy Protocol (VRRP)/First ...

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