Check out: [URL]  This is due to an ESXi CIM bug where non-existent hardware (NVMe etc) sensor readings are "0" where 0 in this instance is detected as a cause for alarm in vSphere. The fix will be included in a future VxRail update, in the meantime to workaround you can disable the alarm in VC
Since upgrading multiple vxrails to 4.5.227 in different locations we're getting frequent temperature alerts.  When viewing the hardware tab the alerts vs what's being reported as the temperature doesn't match and often clears if I update sensors in the hardware tab.  These vxrails weren't getting temperature alerts before the upgrade when they were on 4.0.  Are there any existing issues with this?
Vxrail 4.5 temperature alerts