Security Analytics alerts on "temperature sensor X differential detected"

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Article ID: 169124

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Updated On:

Products

Security Analytics

Issue/Introduction

The following alerts may be seen on your Security Analytics system:

Disk Alert: Adapter 1; seqNum: 0x00021aac; Time: Sat October 10 10:10:10 2015; Event Description: Enclosure PD 0c(c 00/p0) temperature sensor 2 differential detected; Device ID: 10; Enclosure Index: 0 Slot Number 1;
Disk Alert: Adapter 1; seqNum: 0x00021aa9; Time: Sat October 10 10:20:10 2015; Event Description: Enclosure PD 0c(c 00/p0) temperature sensor 1 differential detected; Device ID: 10; Enclosure Index: 0 Slot Number 1;
Disk Alert: Adapter 1; seqNum: 0x00021aa7; Time: Sat October 10 10:30:10 2015; Event Description: Enclosure PD 0c(c 00/p0) temperature sensor 3 differential detected; Device ID: 10; Enclosure Index: 0 Slot Number 1;

Cause

This message indicates that the temperature sensors are recording different (enough) temps. The threshold is smaller than it needs to be.  We have investigated this with Dell and found that this message can typically be ignored.  However, check the items listed below just in case. 

 

Resolution

It possible that a fan is not working properly, or there is a blockage, so it is best to check it out. 

Please check the MD1200 external disk array on this box to make sure that: 
* Datacenter environment/AC is working properly 
* Airflow is not blocked (rack issue) 
* Both power supply fans are working 
* No amber lights on the back of the unit 

If all of the above check out okay, you can safely ignore the message.