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Date:      Thu, 8 Oct 1998 02:05:05 -0500 (CDT)
From:      Kevin Day <toasty@home.dragondata.com>
To:        Marius.Bendiksen@scancall.no (Marius Bendiksen)
Cc:        freebsd-current@FreeBSD.ORG
Subject:   Re: CDROM as system disk
Message-ID:  <199810080705.CAA10059@home.dragondata.com>
In-Reply-To: <3.0.5.32.19981008085114.0091f220@mail.scancall.no> from Marius Bendiksen at "Oct 8, 98 08:51:14 am"

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> >Depending on if your delays between seeks are enough time for the drive to
> >spin down or not are a big factor. (spin down/spin up/seek/read is nasty)
> 
> How much work would it take to tweak the CDROM driver to wait 5-15 minutes
> (or, perhaps add an option somewhere, to make it dynamically configurable)
> before spinning down? I think that would solve some of the problem.
> 
> Of course, you'd probably need cooling if you're going to have a 32x at
> full spin all the time.
> ---
> Marius Bendiksen, IT-Trainee, ScanCall AS
> 

I don't believe that this is possible. The drive's firmware decides when to
spin up/down.

They spin down after only a few seconds because the drives seem to rip
themselves apart under constant use.

Heat also gets interesting in fast drives. :)

Kevin

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