*BSD News Article 89889


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From: Tony Griffiths <tonyg@OntheNet.com.au>
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Mount point going "west" [filesys becomes invisible]
Date: Sun, 23 Feb 1997 17:23:52 +1000
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It is possible that either the 12V rail on the P/Supply has gone flaky
or one of the two 4G drives has a problem with it's logic and thinks
that it has suffered a power failure.  The end result is that the drives
became invisible (Device not configured) to FreeBSD and nothing other
than a reboot would bring them back.

The suspected flaky drive has been removed and I am monitoring the
system to see if the remaining 4G SCSI drive suffers from the same
problem.

If it is the drive, it will be the third 4G Seagate Hawk to die out of a
total of 6 that we have purchased.  This would not instill a great deal
of confidence in me regarding the remaining drives.  Two of the failures
I could possibly attribute to an episode when the building Aircon failed
and was off for 3 days during the peak of the summer heat.  But since
then we have purchased more drives, have installed additional aircon
separate from the building system, and bought 4 extra cooling fans to
make sure that none of the drives get too hot.  In fact, they are now so
cool that there is little difference in temp between the 4G drives and
the box casing!

Has anyone else seen problems with the Seagate Hawk?

Tony