Current high capacity enterprise HDDs (Like an Exos 24 or an WD Gold 24), in ideal conditions, reach around 250-280MiB/s, so quite sort of 300 as a regular numb

Current high capacity enterprise HDDs (Like an Exos 24 or an WD Gold 24), in ideal conditions, reach around 250-280MiB/s, so quite sort of 300 as a regular number. Probably they are pulling info from an older article or just using a round number to make it more clear. Edit note: As a sibling comment says, Seagate had for a while a "2x" Exos model that had dual actuators and claimed ~500Mbytes/s of max transfer speed. But seem discontinued or unavailable and didn't have much success (out of the datacenter at least)