I have something to add to this discussion. The worst value of Attribute
190 shows 44, meaning a maximum drive temperature of 56 Celsius.
Just for fun, you can can probably also decode the raw value 638976037.
This is (hexidecimal) 0x26160025, and *might* mean (all guesses!!):
0x26 = decimal 38 (average temperature?)
0x16 = decimal 22 (lowest temperature?)
0x00 = decimal 0
0x25 = decimal 37 (actual temperature?)
I suggest that you watch this for a while and see if you an figure out
what it means. Then write to this mailing list with the information.
On Sun, 24 Aug 2008, Alexander Shaduri wrote:
> On Sun, 24 Aug 2008 10:01:30 +0200
> Alexander Puchmayr <alexander.puchmayr@...> wrote:
>> Hi there!
>> I really get strange temperatures when I run smartctl on one of my two
>> maxtor-SATA-Drives; There seem to be two temperature attributes,
>> Attribute 190 and 194.
>> While 194 is showing 37°C, which seems to be reasonable, attribute 190 shows
>> really unbelievable values: Value=63 raw=638976037. As I'm pretty shure
>> that the drive is not operated by a nuclear fusion reactor, the value of 63
>> billion degrees is not a temperature in °C. Also the value 63 seems to be
>> rather high, because I can touch the drive with my bare fingers and it
>> feels just hand-worm.
>> So what is this attribute showing?
>> Thanks and greetings
>> Alex Puchmayr
>> 190 Temperature_Celsius 0x0022 063 044 000 Old_age
>> Always - 638976037
>> 194 Temperature_Celsius 0x0032 036 253 000 Old_age
>> Always - 37
> I may be wrong, but AFAIK, the meaning of Attribute 190 is really inconsistent
> between different manufacturers / drives. In your case, it seems to have a value
> of 100C - your_temp, so 100 - 37 = 63. Usually this is done to make it consistent
> with other attributes - the lower the attribute value, the worse it is.
> The raw value may have an additional information (e.g. lifetime min/max) encoded
> in it, so just ignore it.
> So, there's nothing wrong with your drive. Just monitor Attribute 194, 37C is quite
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