External drive constantly spinning down and up
I have a MacBook Pro 2021 (M1 Pro) running Monterey. Recently I got an external LaCie 1Big Dock for use as my primary projects drive. The drive works fine except it continues to spin down into some kind of low-power mode, and then immediately spin back up again, even if it's not being accessed and the computer is idle. It repeats this every 30 seconds or so.
When I'm working in InDesign or some other productivity app that needs the hard disk, it will often be caught in low-power mode and I'll have to wait 5-10 seconds (spinning beachball) for the drive to get back to speed again. This happens CONSTANTLY, and is a severe annoyance.
In the Battery control panel, the option to "Put hard disks to sleep when possible" is NOT checked. "Low power mode" is NOT checked. I want the external drives to stay spinning. The MacBook is plugged in and is not operating on battery power, so I don't know why it keeps putting the external HDs to sleep.
How do I keep the Mac from doing this? It is a constant irritant and can't be good for the drive's mechanism. Just while typing this post, I've listened to it cycle through 8 or 9 up-spins and down-spins. I'm worried it's shortening the life of the drive every time.
MacBook Pro (2021)