This guide provides a step-by-step process for configuring and updating a RAID mirror set on a Raspberry Pi using the mdadm utility. It covers essential tasks such as creating an array, monitoring the RAID status, handling disk failures, and updating the mdadm.conf configuration file to ensure the RAID array is recognized and managed correctly upon system boot. The instructions are tailored for users who need to maintain data redundancy and are responsible for the integrity and availability of their Raspberry Pi's storage system.

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