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Date:      Thu, 14 Jul 2005 21:45:20 +0200
From:      Anatoliy Dmytriyev <tolid@plab.ku.dk>
To:        freebsd-stable@freebsd.org
Cc:        freebsd-questions@freebsd.org
Subject:   Re: dangerous situation with shutdown process
Message-ID:  <42D6C0D0.6040106@plab.ku.dk>
In-Reply-To: <20050714191449.A8A615D07@ptavv.es.net>
References:  <20050714191449.A8A615D07@ptavv.es.net>

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Kevin Oberman wrote:

>SCSI or ATA? If it's ATA, turn off write cache with (atacontrol(8) or
>the sysctl.
>
>The problem is that disks lie about whether they have actually written
>data. If the power goes off before the data is in cache, it's lost.
>
>I am not sure if write-cache can be turned off on SCSI, but SCSI drives
>seem less likely to lie about when the data is actually flushed to the
>drive. 
>  
>

SCSI, Adaptec 2110S

-- 
Anatoliy Dmytriyev
<tolid@plab.ku.dk>





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