These 12tb Seagate Ironwolf “NAS” drives have the following performance characteristics:
I’d assume that’s about par for the course on 3.5" 7200rpm spinny rust drives these days? But with the 18tb drives (WD, though I’m not sure the brand matters), I do a bit better:
write speeds may change as the drive fills I’ve observed as the drive fills, the write speeds decline. This above examples are with the drives more or less empty. Once it gets full, I remember writes dipping down from 200mb/sec to 130mb/sec. But reads shouldn’t change with available capacity, I don’t think?!
Such a blast from the past. I remember caring about how fast disk platters spun… 5400, 7200, 10k, even 15k… before the transition to SSD around 2012. Now I suddenly care about spinning rust again, because as a farmer you are gravitationally and inevitabally pulled to the densest possible storage!
(And then there’s striping… for that juice… every added drive in a stripe set is a 1x gain in speeds, so even a simple 2x stripe set would give you double the read/write speed! But if anything happens to those drives, bye bye data… see the raid calculator for more.)