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I am running most of my webservices of my unraid nas it runs a cheap passive cooled ASRock J3355B-ITX with 16GB RAM and 2TB SATA Cache with a 80TB JBOD array. All in a really nice compact Fractal Design Node 304. When all HDDs are running it sips 90W at standby 15W.

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What kind of noise does that JBOD produce? Do you have any links to a similar one on ebay?

The nice thing about unraid is the array needs to only spin up the disks that are being accessed AND the parity disks (only while writing). I run two parity disks so that I could lose two disks in total before the array fails. While running a parity check all drives get spun up and the total noise level is arround 35db but this totally depends on the drives you are using. For me it's mostly Western Digital Ultrastar DC HC530 shucked from WD Elements because of cost savings.

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