It’s the 2016 model, it’s been on most of the time for four years.
The drives are a couple of years older than that, were in a 2 bay NAS prior.
These are the model numbers of them-
Seagate ST2000DL003 3.5 inch 2TB Hard Drive (Serial-ATA, 6Gb/s, 64Mb, 5900RPM).
They are not new by any means but they have been faultless for their whole lives, error free and awesome.
I would say although being on 24/7 I only use the NAS a couple of times a month, so they haven’t been hammered.
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