Q: Seagate Barracuda going to sleep

From: Adrian Burd <adrian_at_halodule.tamu.edu>
Date: Thu, 17 Dec 1998 10:08:05 -0600

We've just added a 9Gb Seagate Barracuda SCSI drive into one of our
DEC Alpha 500au machines running DU 4.0C. This is not being used as
the system disk, but instead is being for data storage. The machine
was a demo model in a previous life. We set up the disk using the
graphical disk-tool and the disk is NSF'd to several other
machines. Everything seems to work fine EXCEPT....the wretched thing
goes to sleep. The disk appears to spin-down if it has not been
accessed for about 20-30 minutes and it can take as much as about 30
seconds to spin back up again when accessed. This is resulting in NSF
errors all over the place, as well as mail getting bounced.

I've talked to Seagate and they made some suggestions about the "power
from drive" and "power from scsi bus" jumper settings, but none of
their ideas worked. I am currently working around by having an ls
command in the crontab executed every 15 minutes.

Does any kind soul have any clues why this disk should be going to
sleep? And what can we do to stop it?

Many thanks,

Adrian
Received on Thu Dec 17 1998 - 16:10:53 NZDT

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