CAIIB · ITDB · Chapter 17

Business Continuity and Disaster Recovery Planning

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What is Disaster Recovery (DR) Plan?

is a formal document created by the organisation containing detailed instructions on how to respond to unplanned incidents such as natural disasters, power outages, cyber-attacks and other disruptive events.

Scope — BCP / DRP?

BCP: The whole business — people, processes, premises, suppliers, IT; DRP: The IT / data / applications subset only

Goal — BCP / DRP?

BCP: Keep the business operating during and after the event; DRP: Restore IT systems and data after the event

Owner — BCP / DRP?

BCP: Business / COO / BCM Head; DRP: CIO / CISO / IT Operations

Trigger — BCP / DRP?

BCP: Any disruption (pandemic, riot, fire, cyber, supplier failure); DRP: An IT incident or any disruption with IT impact

Time horizon — BCP / DRP?

BCP: Continuous — work-around and resumption; DRP: From declaration of disaster to full IT recovery

Key artefact — BCP / DRP?

BCP: BIA, recovery strategies, plans, call-trees; DRP: RTO/RPO, DR-site runbooks, replication architecture

Disk Mirroring — Mechanism / Benefit?

Mechanism: Duplication of data from one hard disk to another. Mirrored drives operate in tandem, constantly storing and updating the same files on each disk. If one disk fails, the file server issues an alert and continues operating.; Benefit: Zero data loss, near-zero downtime — equivalent to…

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