MAC STUDIO - sleep and wake up problem of external mechanical HD

First of all I wish to excuse me for my uncertain English and possible mistakes, I hope to be able to express the problem in the best comprehensible way.

I am a new owner of a Mac Studio Ultra from about two weeks.

I am really disappointed by a strange behavior of external hd.

I have connected, by Thunderbolt 3, an external LaCie 1big Dock 8 TB. This disk worked always perfectly with my previous iMac (Retina 5K, 27-inch, 2020).

The problem with Mac Studio is that, from the first sleep of the Mac (energy saving), when it wakes up all the peripheral devices wake up but the external mechanical HD (independently from the bus usb or thunderbolt) start to spin-on and spin-off the spindle motor. This means that every time that Mac system launches a task which involves the disks the Finder has to wait the wake up of the device. Obviously this problem slow down the machine and it is impossible to work; the Mac Studio is really fast but, in this way, I have time similar to an old Quadra 700.

In order to give more detail the System version is Monterey 12.4, the same that I had on the previous iMac.

This is the list of the procedures that Apple support suggested me to solve the matter without success:

-safe Boot

-creation of new user

-re-install System from Recovery

-reformatting the Mac Studio and install System ex-novo; I have re-installed all the app one by one from their installer.

In order to give more details about this enormous bug, I include these info:

-the external devices have their own power supply (not bus powered)

-an external SSD 2.5 USB-C (2TB) works without problem.

-LaCie 1big Dock 8 TB is always active on desktop, it never disappear from finder.

-I have tried to connect an old HD USB 2.0 with an adaptor to usb-c and it suffers the same problem of the thunderbolt LaCie 1big Dock 8 TB.

-in the energy saving preference panel, the option regarding to the stop of the disk is not flagged

-the hd firmware and driver has been updated

-No problem with displays

It goes without saying that I am wasting a lot of time and Apple support did not suggest me, until now, a correct solution.

My (ignorant) opinion, as Apple user from 1996, is that when Mac Studio goes in stop it actives some instruction regarding the suspension of the activity to external mechanical devices that won’t be cancelled when it resume its activity, so the external HD go in loop with this start and stop behavior.

Thanks in advance for the attention and I hope that someone has a good suggestion about this matter.

Have a good day.

Riccardo