Mailinglist Archive: opensuse (2430 mails)

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Re: [opensuse] SMART Attribute 194 Temperatures -- Reliable?
  • From: Adam Schrotenboer <adam@xxxxxxxxx>
  • Date: Thu, 24 Apr 2008 10:51:54 -0700
  • Message-id: <4810C8BA.60104@xxxxxxxxx>
David C. Rankin wrote:
Listmates,

How accurate are the SMART Attribute 194 Temperatures? I ask because I have 2 drives that are reporting at, or over, 160 C (161 C = 321.8 F). However, the drives are just warm to the touch, not Hot at all. If the drives were really hot enough to cook a roast, I would expect the outside of the drive to be at least "hot to the touch". With the case open, I can rest my hands on the driver without any discomfort, all the while, smart is reporting:

Apr 24 07:47:17 trinity smartd[3627]: Device: /dev/sda, SMART Usage Attribute: 194 Temperature_Celsius changed from 161 to 166
Apr 24 07:47:17 trinity smartd[3627]: Device: /dev/sdb, SMART Usage Attribute: 194 Temperature_Celsius changed from 166 to 161

Anybody looked into this issue, or is SMART just OUT SMARTING itself?

These are 'normalized' values, within the range of 0-255. If you want more useful information, you need to look at smartctl -a /dev/sda and look for the RAW column.

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