Current, voltage, and temperature sensor error messages with hardware alerts

Products

• Security Analytics

Issue/Introduction

The Enclosure Management Processor (EMP) may periodically be too busy to scan all of the current, fan and voltage sensors on the ME4, aka 2U144 or 5U840, storage arrays and will produce a hardware alert which can be ignored.  The EMP only manages the system, it does not manage or process the data I/O bit stream. These messages can be ignored.

Environment

ME4 or 2U144 storage arrays

Cause

The following lines may be found in the /var/log/messages file.  The keywords to look for are "current sensor", "voltage sensor", and "temperature sensor" along with the "Enclosure Management Processor (EMP)" device reporting the alert.

2023-09-23T03:00:19+00:00 SAhost POWERVAULT[24805]: snlog: sn="##:##:##:##:##:##" id="DS" m="23" c="6" event="DISK_STATUS" category="HARDWARE" ip="192.0.2.x" model="R640xl" msg="An Enclosure Management Processor (EMP) reported an alert condition on a current sensor. Type: the FRU is not installed. (enclosure: 1, WWN: 500CGF0F173AD4C) current sensor for Current 12V Rail Loc: left-PSU, sensor status: N/A; "
2023-09-23T03:00:19+00:00 SAhost POWERVAULT[24808]: snlog: sn="##:##:##:##:##:##" id="DS" m="23" c="6" event="DISK_STATUS" category="HARDWARE" ip="192.0.2.1" model="R640xl" msg="An Enclosure Management Processor (EMP) reported an alert condition on a voltage sensor. Type: the FRU is not installed. (enclosure: 1, WWN: 500C0GF0F173AD4C) voltage sensor for Voltage 5V Rail Loc: right-PSU, sensor status: N/A; ""

2023-09-23T03:00:19+00:00 SAhost POWERVAULT[24822]: snlog: sn="##:##:##:##:##:##" id="DS" m="23" c="6" event="DISK_STATUS" category="HARDWARE" ip="192.0.2.x" model="R640xl" msg="An Enclosure Management Processor (EMP) reported an alert condition on a temperature sensor. Type: the FRU is not installed. (enclosure: 1, WWN: 500C0GF0F173AD34C) temperature sensor for Temperature Hotspot Loc: right-PSU, sensor status: N/A; ""

The Web UI for the storage array can also show the latest events.  There is a green up arrow in the bottom left section of the home page.  Click on the arrow and select Show events. The arrow will change to orange once it is selected.

Again, the current, voltage, and temperature events can be ignored.  Dell has suggested that a firmware update this in 2024 by ignoring these short five second alerts.

Resolution

These spurious errors can be ignored.  Dell will correct this in a future firmware update next year.