Do you have your 2.5" SSDs mounted behind the mainboard tray where there is no airflow at all, by any chance? That's OK for 2.5" SATA drives, but 2.5" NVMe drives are suffocating in such locations.It's not 10 years old but (the Micron 7450 Max) runs very hot.Unless you go SATA you will have this issue with NVMe enterprise drives, you should not underestimate the heat issue as it'll give you headaches one you diagnose weird stability issues later.
I had this issue on 7450 Pro drives, they idle at 55-60 even under a heatstink unless you blast them with a ton of airflow and/or ensure the heatsink makes really good controller contact.
I have a couple Micron 7400's (also 2.5") and they never exceed 60ºC, usually idling around 40ºC, but there's steady airflow over them (120mm fan blowing directly over 3x 2.5"/3.5" cage)
