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Failover

Failover is a backup operational mode. It activates when a primary system becomes unavailable.

Key Aspects:

  1. Secondary system takes over primary functions
  2. Aims to minimise downtime
  3. Maintains system availability
  4. Often an automated process
  5. Critical for high-availability systems

Common Failover Scenarios:

  1. Server failover
  2. Database failover
  3. Network failover
  4. Application failover
  5. Cloud service failover

Failover Systems Require:

  1. Redundant hardware or systems
  2. Data replication mechanisms
  3. Automated switching processes
  4. Regular testing and maintenance