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WilliamG

macrumors G4
Original poster
Mar 29, 2008
10,047
3,960
Seattle
Hey all,

I run a bunch of RAID arrays connected to my 2018 Mac mini. Prior to Monterey they’d sleep all day, only waking up for drive checks every 24 hours. Since the Monterey update they’re waking up all the time, and it’s really wasteful, likely to cause premature failure of disks.

Anyone else encounter this, and is there a fix at all?

Thank you in advance!
 
Same problem here now since, I guess, a Monterrey update.

I did some experiments and it looks like if the Mac (iMac 2019) enters sleep mode, the external drives go to sleep as well, you see a USB hub do the same, but after a minute they wake up again. And after a few minutes they go to sleep again, and the same thing repeats over and over again.

What is happening ?

I killed all background processes, but it doesn't help.

Not sure why the USB/TB ports keep (basically) power cycling, even when there's only a WD My Book HDD attached.
 
Same problem here now since, I guess, a Monterrey update.

I did some experiments and it looks like if the Mac (iMac 2019) enters sleep mode, the external drives go to sleep as well, you see a USB hub do the same, but after a minute they wake up again. And after a few minutes they go to sleep again, and the same thing repeats over and over again.

What is happening ?

I killed all background processes, but it doesn't help.

Not sure why the USB/TB ports keep (basically) power cycling, even when there's only a WD My Book HDD attached.

For me my Mac mini never sleeps, so it's nothing to do with sleep mode - it's just Monterey being rubbish.
 
The same happening here.


Here is my workaround:



Some reports suggest that it will be fixed in 12.3
 
I forgot already replied to this thread. I posted more here:

 
Anyone with any further updates or solutions for this? Almost a year later and still driving me insane...
 
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