Date: Tue, 31 Oct 2006 12:39:33 -0600 From: Derek Ragona <derek@computinginnovations.com> To: Wayne <wc_fbsd@xxiii.com>, FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: SCSI Controller Question Message-ID: <6.0.0.22.2.20061031123441.022660b0@mail.computinginnovations.com> In-Reply-To: <454660F0.5010602@xxiii.com> References: <454660F0.5010602@xxiii.com>
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If you are using the drives as just SCSI drives and get another controller
in the same Manufacturer's "Family" you should be able to just replace the
controller.
If you use a different manufacturer's controller, you may have to re-format
the drives after you do a dump on the old controller. The reason is that
there are no "standards" for drive geometry translation. SCSI drives are
made to appear to the OS as a series of logical blocks by the
controller. The way the controller translates the actual geometry to the
logical blocks can differ on different manufacturer's controllers.
-Derek
At 02:30 PM 10/30/2006, Wayne wrote:
>Hey Guys,
>
>Not entirely FreeBSD specific, but I was hoping someone could help with a
>question about SCSI controllers.
>
>One FreeBSD system here is running drives on an old Adaptec 2940
>controller. I would like to upgrade the controller, as the drives are
>actually Ultra 160 capable. Can you normally just swap SCSI drives onto a
>different controller, and still access all the data? (like with IDE) Or
>will I need to dump & restore, also?
>
> -Thanks, Wayne
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