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From: Dieter =?iso-8859-1?q?N=FCtzel?= <Dieter.Nuetzel@hamburg.de>
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To: Dirk Mueller <dmuell@gmx.net>, ReiserFS List <reiserfs-list@namesys.com>,
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Subject: Re: URGENCY: IBM U160 SCSI disk spin-down from time to time
Date: Tue, 25 Sep 2001 03:06:08 +0200
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Cc: Chris Mason <mason@suse.com>, Nikita Danilov <Nikita@namesys.com>,
        "Vladimir V. Saveliev" <vs@namesys.com>,
        Hans Reiser <reiser@namesys.com>, support@storage.ibm.com
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Am Dienstag, 24. September 2001 23:49 schrieb Dirk Mueller:
>
> > All spin-downs occur during heavy dbench (16/32/+ clients) on the same 
> > partition (/dev/sda8; the last one).
>
> Most likely the drive is overheating

Nope.
I've forgotten that info.

ALL three disks are actively cooled of there own.
Even the DDYS (10k RPM) is fewer than "handwarm".

> and is spinning down/up again to recalibrate itself.

NO, it _only_ restart and recalibrate during reboot (the AHA-2940UW BIOS 
detection routine).

> you should give it a better cooling ;-)

You're thinking about liquid nitrogen or sodium...;-)

-Dieter