SMART drive temperature=?

[Frazer Jolly Goodfellow]

For an IDE hard drive, from where is the temperature measured in the
SMART data reported for the drive?

 

[Rod Speed]

For an IDE hard drive, from where is the temperature
measured in the SMART data reported for the drive?

Varys with the drive, its not standardised.

 

[Frazer Jolly Goodfellow]

Varys with the drive, its not standardised.

Which presumably means you can't compare the reported temps between
different make/models of drive.

I guess it must be the temp at the critical hotspot for the
particular model of hard drive?

 

[Rod Speed]

Which presumably means you can't compare the
reported temps between different make/models of drive.

Dunno, it would be reasonable to assume that most manufacturers
to put the sensor where the temperature matters most.

Some evidence that Maxtor doesnt, with some of the ics
getting stinking hot while the SMART temp is quite reasonable.

I guess it must be the temp at the critical
hotspot for the particular model of hard drive?

That is certainly the most logical place to put it, but that
assumes that there is a critical hotspot. No real evidence
that that is true with most drives or that it varys all that
much with most of the obvious places to put it either.

 

[Arno Wagner]

@individual.net:
Which presumably means you can't compare the reported temps between
different make/models of drive.

I guess it must be the temp at the critical hotspot for the
particular model of hard drive?

It will be consistent with the maximum drive temperature
listed in the drive's manual. Usually that is 55C today.
For some margin, try not to exceed 45C under load.

Arno

 

[Joe S]

Dunno, it would be reasonable to assume that most manufacturers
to put the sensor where the temperature matters most.

Some evidence that Maxtor doesnt, with some of the ics
getting stinking hot while the SMART temp is quite reasonable.

That explains the unvelieveable cool temperatures I see using DTEMP
on my Maxtor drive. Thanks.

 

[Frazer Jolly Goodfellow]

Dunno, it would be reasonable to assume that most manufacturers
to put the sensor where the temperature matters most.

....but that doesn't appear to be the case.

Some evidence that Maxtor doesnt, with some of the ics
getting stinking hot while the SMART temp is quite reasonable.

.... can't comment on Maxtor, but I've recently found that to be the
case with another major brand, hence my interest.

That is certainly the most logical place to put it, but that
assumes that there is a critical hotspot. No real evidence
that that is true with most drives or that it varys all that
much with most of the obvious places to put it either.

In fact there's no real evidence that the SMART temp reporting is,
in general, of any value at all.

Q: A disk drive mfr's datasheet specifies the operating temperature
range to be 0-60C. That means that the disk drive is warranted to
operate to spec in an ambient temperature of 60C?

 

[Rod Speed]

...but that doesn't appear to be the case.

Fraid so.

... can't comment on Maxtor, but I've recently found that to
be the case with another major brand, hence my interest.

Which brand, and how did you decide that ?

In fact there's no real evidence that the SMART
temp reporting is, in general, of any value at all.

Oh bullshit. I have watched the SMART drive temp on many drives
when the drive is installed where it isnt getting adequate cooling and
you can see the effect of the inadequate cooling on the SMART temp.

Q: A disk drive mfr's datasheet specifies the operating temperature
range to be 0-60C. That means that the disk drive is warranted to
operate to spec in an ambient temperature of 60C?

Nope. The datasheet normally specifys where that needs
to be measured with drives with full product manuals.

 

[Frazer Jolly Goodfellow]

Oh bullshit.

..

 

[Rod Speed]

.

Never ever could bullshit its way out of a wet paper bag.