I'm hampered by inexperience reading the outputs. Even assuming (as I think right) that the marker at the left side is the zero amps level and lead-in, I can't get the vertical scales from the 6 graphs to match the data in the tables very closely.Thanks for that, the other pdf didn't show those, though at least on those graphs and if I'm reading them correctly they never go above startup current and also last for much less time.
But I do notice this, which gives me pause. In fig.1 the 6TB drive 5v line is consistently above spinup - but transients way higher (see spike at the start). In fig.2 the 6TB 12v line hits almost spinup draw for either sustained periods, or dense bursts, lasting around 0.2 - 0.4 sec, even from such a brief sample. In fig.5 the 5v line pulls a surprise - a near solid 0.3 sec burst that looks way above even the starting transient (visible at left).
Some forum users such as @Bidule0hm , @cyberjock and @danb35 have measured HDD current in the past on this forum (admittedly focusing mostly on startup and at times not separating 5v from 12v); perhaps if one or more of our electrically skilled gods sees this subtle ping :p, they might interpret the Seagate graphs (p.13-15) for us, match them with the data tables (p.10-12) and suggest what can be gleaned from them regarding 5v and 12v in-use bursts and peaks, and their size and density?
Edit: Oh, I see they are here. Well, 2 anyway! Hi guys :) That was prescient! You arrived while I had this in draft and was trying to research the scope they used for hints on interpretation!