[mythtv-users] A Myther can dream, right?

[Jean-Yves Avenard]

On 18 August 2014 23:19, Stephen Worthington <stephen_agent at jsw.gen.nz> wrote:
>> My recollection is that Google's data on its drives shows that to be a
> myth.  I believe their data says that as long as a drive is kept
> within its specified operating temperature range, the temperature it
> is run at has no bearing on the drive's lifetime.

IRC, that's not what their study showed.

Just that there was no difference in lifespan for drive whose average
temperatures were kept between a set range.

Quick google:
We first look at the correlation between average temperature during
the observation period and failure. Figure 4 shows the distribution of
drives with average temperature in increments of one degree and the
corresponding annualized failure rates. The figure shows that failures
do not increase when the average temperature increases. In fact, there
is a clear trend showing that lower temperatures are associated with
higher failure rates. Only at very high temperatures is there a slight
reversal of this trend. Figure 5 looks at the average temperatures for
different age groups. The distributions are in sync with Figure 4
showing a mostly flat failure rate at mid-range temperatures and a
modest increase at the low end of the temperature distribution. What
stands out are the 3 and 4-year old drives, where the trend for higher
failures with higher temperature is much more constant and also more
pronounced.

Failure rate started to increase significantly for temperature [15,30].
After three years drive average temperature >= 45 was also very high

Would never attempt to keep drives running at 60+ even though that's
what the disks are rated at