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I'm thinking of using NanoPI NEO as a NAS, which will be acting as an extended storage for saving video recording from my two MI home cameras. The videos can be accessed using MI Home app, so NanoPI need not process the videos on its own. My questions are:

1. is it safe to run NanoPI 24x7?
2. I don't know how much load does writing data from two cameras to disk takes, so should I use a fan with the case or is the heatsink provided with the NanoPI enough?