Cluster

From BCMpedia. A Wiki Glossary for Business Continuity Management (BCM) and Disaster Recovery (DR).
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1. A Cluster is a group of systems that worked together as a single system to provide fast and uninterrupted services.
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Notes: It has sufficient hardware and software redundancy that a single failure will not significantly disrupt its services.

Similar term: Network Attached Storage, Storage Area Network.

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BCMBoK Competency Level
BCMBoK 4: Business Continuity Strategy CL 2D: Intermediate (DR)
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(Source: Business Continuity Management Institute - BCM Institute)

A Manager’s Guide to Implementing Your IT Disaster Recovery Plan