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Re: more scsi errors :(

daemon@ATHENA.MIT.EDU (James W. Laferriere)
Fri Nov 29 00:12:12 1996

Date: 	Thu, 28 Nov 1996 22:13:22 -0800 (PST)
From: "James W. Laferriere" <babydr@nwrain.net>
To: Jon Lewis <jlewis@inorganic5.fdt.net>
cc: "Theodore Y. Ts'o" <tytso@mit.edu>,
        Gerard Roudier <groudier@club-internet.fr>, ncr53c810@colorado.edu,
        Linux SCSI Mailing List <linux-scsi@vger.rutgers.edu>
In-Reply-To: <Pine.LNX.3.95.961125123227.174W-100000@inorganic5.fdt.net>


On Mon, 25 Nov 1996, Jon Lewis wrote:
> On Mon, 25 Nov 1996, Theodore Y. Ts'o wrote:
> > You say there are six SCSI devices in the box --- how many of them are
> > connected to your news server?  You know about the SCSI chain length
> > limitations, right?  (The entire chain cannot exceed 5 meters, if I
> > remember correctly.)  You may want to consider borrowing a SCSI
> > controller, and splitting the SCSI chain in half, half going to one SCSI
> > cotroller, and half going to the other SCSI controller.  
> 
> The system is as follows.  News server has 2 NCR 810's, each has a granite
> digital internal cable.  scsi0 has 3 disks, scsi1 has 2 disks (both scsi0
> and 1 have longish cables...but within specs according to granite.)  The
> mail server that also lives in there has another NCR 810 with 1 disk
> attached with a run of the mill short cable. 
> 
> I thought you had to sacrifice disks to the SCSI gods?  I've often told
> people about how we own 2 Micropolis 3243's and had 3 go bad in the first
> few months.  150% failure rate...hmm.  Won't be buying more of those.  We
> haven't had a failure since we started backing up religiously.
>  
	Jon,

	We had 2) 3243's go out on us very recently, & it looks like
	a third is on its last legs now.  Which drives did you replace
	them with ?

				JimL
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