04-16-2008, 12:20 PM
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| Junior Member | | Join Date: Sep 2009
Posts: 0
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 Re: Recommended hard drive temperature
Previously Franc Zabkar wrote:
> I've been reading this document which is an analysis of Google's hard
> disc failure rates:
[...]
If you can keep your HDDs below around 40C or so, then you will
run them under data-center conditions. These conditions is what
the Google study is about. An example from my personal experience
is with Maxtor disks. They had direct outside airflow and stayed
<30C under load and at 22C when idle. No failures in 3 years for
about 50 disks. These were the same Maxtors known to die fast when
run hot (e.g. at 50-60C).
Conditions in a typical PC are different. The HDDs are often
not directly cooled with outside air and can get hot under load.
If you have temperature spikes in the 50C range or higher,
temperature is a major factor in HDD death. How major exactly is
currently unknown or only known to the manufacturers. Most drives
have a 55C stated maximum temperature. The Maxtors I mention above
had a statement in their product manual that up to 60C the drive
failure rate would not increase, despite a 55C maximum temperature.
There is reason to believe that statement was over-optimistic or
a plain lie. So don't expect the HDD manufacturers to tell you
about high-temperature life expectancy.
Bottom line, the Google study shows that if you can get the drives
consitently down to below 40C, temperature does not matter a lot.
So the recomendation would be to have your drives (under load,
on a hot day) below 40C at all times. Note that this also applies
to external enclosures.
Arno
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