Aryeh Gregor schrieb:

On Fri, Mar 19, 2010 at 4:15 AM, John Robinson
[off-list ref]  wrote:
   

quoted

Do you have a reference for this? Most drives' operating temperature range
is specified up to 55°C, sometimes higher for enterprise drives, without any
indication (apart from common sense perhaps) that running them this hot
reduces lifespan.
     

Google's study of>100,000 disks over 9 months or so
<http://labs.google.com/papers/disk_failures.html>  suggests that
hotter drives don't fail much more often:
   

Thanks for the link.
That study was referred to as a comparison to the current situation. But 
google only tested up to 400 GB in that statistic, and I DO remember 
that my old 160GB to 500 GB drives were all a lot hotter than any of my 
current drives. Those Samsung 1TB drives only reached 35°C during last 
hot summer, but I did let the fan rotate faster during the summer.

Current real world data of my drives (Windows main machine, room 
temperature is 23°C right now):
SAMSUNG 1 TB 27°C (HD103UJ)
WD 1 TB 30°C (WD10 EACS-00ZJBO)
WD 750 GB 34°C (WD75 00AACS-00ZJBO)
SAMSUNG 1 TB 25°C (HD103UJ)

Linux Server (mirrored drives):
SEAGATE 1,5 TB 34°C (ST31500341AS)
SEAGATE 1,5 TB 34°C (ST31500341AS) <- this one will probably fail in one 
or one and a half year if the realloc-sector count continues to develop 
this way.

Joachim Otahal

--
To unsubscribe from this list: send the line "unsubscribe linux-raid" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html