Oh i meant 120k+ album count so i will upgrade RAM next time.
The M2SSD is an 256GB ADATA XPG SX8200 Pro NVMe drive.
I moved some files to the external drive, roon says now 10% free of 1848GB.
@wizardofoz
@Rugby
I will give the the fan a look, the NUC is running a full year without maintance.
Dust is allways a problem.
And i am sure i found the main problem, roon was running audio analysis.
I tried to change the drives and copied and added files and deleted the whole database.
For testing i switched off the analysis and the NUC was quiet immediately.
Thanks guys for your help and input!