I have a ZFS cache pool with two mirrored SSDs.
Initially, everything worked fine, but after a few hours, the second drive stopped showing any temperatures. Upon further investigation, I discovered that the SMART attributes failed to load, and the ZFS pool was in a "DEGRADED" state.
While I am still investigating the issue with the drive itself (likely just a cable problem), my concern here is that the UI did not inform me about any issues with my cache pool. Besides not displaying temperatures, there were no indications in the UI that something was wrong. Additionally, there was no notification alerting me that my pool had degraded.
Below are some screenshots of the UI, the output of the "zpool status" command and the zip with diagnostics.
home-server-diagnostics-20231121-1739.zip