Good Day. I am new to the forum, but have been using Unraid for roughly the past 3 months. Until recently i have not a single issue. The issue i am having is that the SSD Cache drive is overheating continuously even at idle. I have even tried shutting the server down so that it can cool off, and once it starts up, within a few minutes it is overheating to 60'C. Since the system has been running it has barely reached 41'C. My SSD is an M.2 250gb WD Black. It is at roughly 40% capacity. Is the SSD possibly damaged or faulty or is there something i can check or change to correct this. Any help will be highly appreciated. 

Edited September 15, 20187 yr by Dylan

SSDs heat up very quickly during writes, also check the documentation for that model but max temperature should be around 70C, though 60 is kind of high if it's not writing much data.

 

 

thank you for the response. I checked the rated temperatures and it does seem fine. My system seems to be running ok now as well. Had me worried as the heat spiked within one day, and then froze and shut the server down. It also stopped the SSD from showing in the array, so i had to reassign it. But it seems to be running smooth now. I have also moved the SSD to another slot allowing more air flow to reach it just in case.

Idle at 60 is way too high.

 

Even with no airflow, my SSD idles(ish) at 40 ("ish" = there are some IOs but I consider that my idle).

Even under heavy write (writing 200GB of data at 500MB/s+) it didn't even get to 50 (ok, 49 but that's not 50).

 

Assuming you know for sure there's no IO then I think you did the right thing by moving it to a different slot. Something might have been amiss. Next time you see high temp, go to Main Page and click on the "Toggle Read/Write displays" button to see what's the current Read/Write speed on your SSD. If there's indeed high IOs on the drive, you might want to find out what's doing it.