HobeSoundDarryl
macrumors G5
Curious. Did you say what year iMac and your interconnect? I'm assuming TB2, but, you know. I've had TB cables go bonkers - might be worth getting another, blowing out the ports on the iMac and RAID, and do a little stress test.
I've re-tested the stability all the way back to my oldest iMac- a 2010 model running High Sierra.
Connection is USB-A (USB 3.1) Mac to USB-B on the box. The main cable has worked fine for years. However, in ruling out something just happening to go bad with cables, I've since tested TWO others (new).
Then I also started wondering about USB-A jacks on the Studio, so I ordered a new USB-C to USB-B cable to test the USB-C jacks on the Studio.
None of that makes any difference. I wondered if it was just a freak timing thing and maybe the box/drives are going bad, so I unhooked it and main cable and re-attached it to the old iMac. I left that connection on for a whole day- including through a sleep cycle. All fine.
Then I decided to try a newer MBpro with a newer version of Mac OS but not yet Big Sur/Monterey. Same thing- just fine.
So 2 Intel Macs linked by this one cable to this box are perfectly stable. Brand new Mac Studio linked with this cable (or 2 others... or a USB-C to USB-B cable) can't maintain a connection for more than a few hours.