A.8.14 Redundancy of information processing facilities would include:
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Redundancy Plan: Documentation of a formal redundancy plan that outlines the organization's approach to ensuring redundancy and fault tolerance for critical information processing facilities.
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Redundant Systems: Evidence of redundant information processing facilities, such as backup servers, power supplies, network connections, and storage devices, to ensure continuous operations even in case of failures.
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High Availability Architecture: Documentation of the organization's high availability architecture, which may include clustering, load balancing, failover mechanisms, and disaster recovery strategies.
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Failover Testing: Records of regular testing and validation of failover mechanisms to ensure they work as intended during real-world scenarios.
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Data Replication: Evidence of data replication procedures, such as real-time or near-real-time replication of data between redundant facilities to ensure data integrity and availability.
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Backup and Recovery: Documentation of backup and recovery procedures for critical systems and data, including the frequency of backups, storage locations, and restoration processes.
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Business Continuity Plan: Integration of redundancy measures into the organization's business continuity plan to ensure continuous service availability during disruptive events.
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Physical Security Measures: Evidence of physical security measures in place to protect redundant facilities from unauthorized access and potential threats.
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Maintenance and Monitoring: Records of maintenance schedules, monitoring, and regular inspections of redundant systems to identify potential issues before they escalate.
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Compliance Documentation: Evidence of compliance with relevant regulations and standards that require redundancy measures for critical information processing facilities.
The purpose of redundancy is to minimize the risk of service interruptions, data loss, and downtime in the event of hardware failures, natural disasters, or other unforeseen incidents. As an auditor, I would review these pieces of evidence to ensure that the organization has taken appropriate measures to maintain redundancy in its information processing facilities, promoting the continuity of operations and safeguarding against potential disruptions.