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Dated: 12-11-2024

Ch02. how is Site Redundancy Incorporated into Enterprise Network Design

Types

Hot Site

  • Mirror of primary data center
  • Populated with servers, cooling, power, and office space
  • Running concurrently with main/primary data center (synching)
  • Minimal impact

Cold Site

  • Office or data center space without any server related equipment installed
  • Power, cooling and office space
  • Servers/equipment migrated in event of primary site failure

Warm Site

  • Middle ground between hot site and cold site
  • Some pre-installed server hardware (ready for installation of production environments)
  • Requires engineering support to activate

Rto

  • Max amount of time, following a disaster, for an organization to recover files from backup storage and resume normal operations (max amount of downtime an organization can handle)

Rpo

  • Max age of files that an organization must recover from backup storage for normal operations to resume after a disaster (minimum frequency of backups)

Example

  • If an organization has an RTO of two hours, it cannot be down for longer than that.
  • if an organization has an RPO of four hours, the system must back up at least every four hours.
Post Assessments
Which of the following is the cheapest type of redundant site models
  • Warm Site
  • Cold Site
  • Hot Site
  • Moderate Site
Which one of the following is NOT a type of redundant site models?
  • Warm Site
  • Hot Site
  • Thunder Site
  • cold Site
In the context of Site Redundancy, if an organization has an _ of two hours then it cannot be down for longer than that.
  • RPO
  • RTO
  • RSA
  • RTT
which of the following redundant site model is considered as an expensive model.
  • Moderate Site
  • Hot Site
  • Warm Site
  • Cold Site
In the context of Site Redundancy, if an organization has an RPO of four hours then the system must back up at least every _ hours.
  • Eight
  • two
  • Three
  • four