Re: [git patch] libata resume fix
From: Robert Hancock
Date: Wed May 31 2006 - 23:28:01 EST
Bill Davidsen wrote:
The trade-off is that if I have a 15k rpm SCSI drive, it would take a
lot of design changes to make it spin up quickly, and improve a function
which is usually done on a server once every MTBF when replacing the
I think the majority of very large or very fast drives are in systems
which don't (deliberately) power cycles often, in rooms where heat is an
issue. And to spin up quickly take a larger power supply... 30 sec is
fine with most users.
Couldn't find a spin-up time for the new Seagate 750GB drive, but the
seek sure is fast!
I wouldn't guess that even a 15K drive would take nearly that long. For
boot time on servers it doesn't matter much though, disk spinup time is
in the noise compared to the insane BIOS delays on most of them during
bootup. Like on some servers (ahem.. IBM) which have about a 15 second
delay on the main BIOS screen, 10 second delays on every network boot
ROM, a 1 minute delay on the SCSI controller before it even starts
scanning the bus, then another good 10 seconds before it starts booting.
Gets annoying after a few reboots..
Robert Hancock Saskatoon, SK, Canada
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