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RayDude
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Joined: 29 May 2004
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PostPosted: Sun Jan 06, 2013 9:16 pm    Post subject: SMART question Reply with quote

I have a server with hard drives in it. There are fans blowing directly across the drives. Yet I'm getting these messages in syslog:

Code:
Jan  6 11:49:30 server smartd[2672]: Device: /dev/sdc [SAT], SMART Usage Attribute: 190 Airflow_Temperature_Cel changed from 73 to 72
Jan  6 11:49:30 server smartd[2672]: Device: /dev/sdc [SAT], SMART Usage Attribute: 194 Temperature_Celsius changed from 27 to 28


How can the airflow temperature be so dangerously high and the internal temperature be so entirely ordinary?

Any suggestions?

Thanks.
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eccerr0r
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PostPosted: Sun Jan 06, 2013 9:53 pm    Post subject: Reply with quote

Likely because that's the "raw number" field, and it's exactly that - raw, it's the raw number read from the hardware before it has been computed to a real number - and thus doesn't mean it's really that hot. If it were that hot, the other fields in "Value" would be less than "Threshold" which would indicate a failure. If "Worst" is close to "Threshold" that means you could be getting close to failing...
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