I'm running Unraid 6.10.0-rc2 and a day ago I put in a 980 Samsung NVME drive and I got message last night that it was 85 Celsius. This is pretty alarming since the system is honestly pretty idle.
On the MAIN page for unraid it indeed says 85C, but in the smart values for the drive it showed a Temperature of 35. Also the TEMP Sensor 1 was about 35C ish and the Temp Sensor 2 was about 39C ish.
The funny thing is that the THERMAL TEMP. 2 Transition Count was the 85. (I tried to look what that was and I guess that is the number of times it went into thermal throttle (according to Kingston drives). So is it reporting that value!?
I also took temp readings with a thermal thermometer which showed 35C on it. BTW it does have the heatspreader from the motherboard on the drive (Gigabyte z590 Aorus Elite).
The overheat message came at 10:01 that the drive was 85C and I got another one at 10:32 that it returned to normal.
Here's the system log during that time:
QuoteJan 6 17:37:18 Tower emhttpd: read SMART /dev/sdc
Jan 6 17:38:03 Tower emhttpd: read SMART /dev/sdb
Jan 6 18:10:34 Tower emhttpd: spinning down /dev/sdb
Jan 6 18:20:19 Tower emhttpd: read SMART /dev/sdb
Jan 6 18:51:52 Tower emhttpd: spinning down /dev/sdb
Jan 6 18:51:52 Tower emhttpd: spinning down /dev/sdc
Jan 6 22:01:02 Tower sSMTP[2073]: Creating SSL connection to host
Jan 6 22:01:02 Tower sSMTP[2073]: SSL connection using ECDHE-RSA-AES256-GCM-SHA384
Jan 6 22:01:03 Tower sSMTP[2073]: Sent mail for ********** (221 2.0.0 csp01.eastlink.ca Eastlink closing connection) uid=0 username=root outbytes=836
Jan 6 22:01:51 Tower flash_backup: adding task: /usr/local/emhttp/plugins/dynamix.my.servers/scripts/UpdateFlashBackup.php update
Jan 6 22:12:24 Tower webGUI: Successful login user root from 192.168.22.30
Jan 6 22:12:53 Tower emhttpd: read SMART /dev/sde
Jan 6 22:13:03 Tower emhttpd: read SMART /dev/sdd
Jan 6 22:13:27 Tower emhttpd: read SMART /dev/sdc
Jan 6 22:25:27 Tower emhttpd: cmd: /usr/local/emhttp/plugins/dynamix/scripts/disk_log nvme0n1
Jan 6 22:32:56 Tower flash_backup: adding task: /usr/local/emhttp/plugins/dynamix.my.servers/scripts/UpdateFlashBackup.php update
One last thing I noticed is that the drive now shows a value of 132 for Thermal Temp 2 transition count. I know SMART is a interesting beast and different manufacturers have different values; so maybe that isn't actually what this is.
A test I did this morning was run a benchmark on that SSD with DISKSPEED docker and the Temp Sensor 2 never went above 50C.
My next plan is to update the firmware (apparently there is a new version for this drive).
Quick Edit: I was going to include the SMART report and I swear it now just said "Temperature of 85C" in the smart, but the MAIN page was fine. Unfortunately I clicked away and went back and it has returned to 34C. .. and the Thermal Temp 2 Transition count is now 133. I don't believe Temperature sensor 1 or 2 was off just the generic "temperature" one.
Here's my current values for SMART:
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