Overview
Data Availability is a key component of the CIA triad (Confidentiality, Integrity, Availability). It involves ensuring that systems, networks, and applications are functioning correctly to provide access to data. High availability (HA) is often achieved through redundancy and failover mechanisms.
Factors Affecting Availability
- Hardware Failures: Server, storage, or network outages.
- Software Bugs: Application crashes or database errors.
- Cyberattacks: DDoS attacks or ransomware.
- Natural Disasters: Fires, floods, or power outages.
Strategies for High Availability
- Replication and Clustering
- Load Balancing
- Regular Backups and Disaster Recovery planning