[8531] in linux-scsi channel archive

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Re: Fast Wide vs Ultra Wide

daemon@ATHENA.MIT.EDU (Ricky Beam)
Tue Apr 4 01:44:11 2000

Date:	Tue, 4 Apr 2000 01:40:52 -0400 (EDT)
From: Ricky Beam <jfbeam@bluetopia.net>
To: Matthew Dharm <mdharm-scsi@one-eyed-alien.net>
Cc: The Linux SCSI list <linux-scsi@vger.rutgers.edu>
In-Reply-To: <Pine.LNX.4.10.10004032229270.32219-100000@ziggy.one-eyed-alien.net>
Message-ID: <Pine.LNX.4.04.10004040134300.23096-100000@beaker>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII

On Mon, 3 Apr 2000, Matthew Dharm wrote:
>> Are the drives jumpered for parity?  If they aren't jumpered, they may not
>> even calculate parity.
>
>No parity jumpers.

Holy shit!  A drive that doesn't "do" parity?  Can you tell the 960 to ignore
parity? (dangerous as hell, but better than nothing, right?)

>Good.  This means that I'm not crazy.

I'm not qualified to make that call :-)

>The thing that got me is thi: the test that the controller performs is
>independent of devices.  In fact, it's under a heading marked "cable
>tests", and there is a separate section for "device tests".  I didn't
>think parity was in-band data...

Who knows what those nuts at Mylex are checking.  I have an AccelRaid 150
that likes to lock up _alot_ -- it ain't the drives, the cable, the
termination, or the OS... there's a problem with the controller and they
have yet to even say "ok, it's a problem." (I sent it to them for repair.
They sent it back to be with a new RTC battery.  Yeah, that fixed it.)

--Ricky



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