Why is the HDD constantly working regardless of the OS?

Question

Hard disks

Actually why - the question is rather rhetorical. Question - how to cure it?
The bottom line is this: there is a Seagate Constellation ES [ST1000NM0011] HDD, on which W7 OS is installed + some software that is not demanding on disk resources. Recently, a feature has been noticed: the disk starts to rustle rather quietly, not quickly, but rather persistently, not monotonously, with episodic breaks of half a second. Might stop for a minute. The rustling is very similar to writing a large number of small files or to an active defragmentation process.
A lot of time was spent interrogating the system for what the hell. The axis, as it turned out, was completely irrelevant. For all the questions in it were removed when the disk rustled immediately when power was applied, even before the BIOS was loaded.
The problem, it seemed, was in the controller, which, most likely, found some kind of BED itself and decided, having sent everyone to hell, to exclusively check the entire screw. Since it was not clear whether this was a selfcheck and when it would end, it was decided to run a Windows checkdisk with error correction. According to the results, the disk calmed down for a day. And now it rustled again.
Now thoughts come that this is hardly a self-check, because a self-check would not stop the rustling sometimes for a couple of minutes.
Does anyone have any ideas or experience on this.
Z.Y. There is practically nothing hanging in the background in the system, except for a limited list of services, a couple of firewood and an old nod.
The system practically does not turn off, but once a day it goes to sleep. Until recently, it hasn't rebooted in months.