Energy efficient surveillance software?

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For energy-efficient surveillance software options, you might consider open-source solutions like ZoneMinder or Shinobi. These platforms offer flexibility and can run on various operating systems, including Linux, which aligns with your UnRAID setup. Additionally, they provide features for managing CCTV cameras efficiently while keeping CPU usage in check. As for running a MacOS VM on UnRAID, while technically feasible, it might require additional configuration and resources, potentially impacting system performance. Given your setup and preferences, leveraging the NAS as a storage solution while running surveillance software directly on a separate device, such as an iMac, could be a practical solution.