Date: Mon, 09 Apr 2001 15:54:42 -0600 From: "Justin T. Gibbs" <gibbs@scsiguy.com> To: Jens Schweikhardt <schweikh@schweikhardt.net> Cc: freebsd-scsi@FreeBSD.ORG Subject: Re: Trouble with timeouts after installing an U160LVD Message-ID: <200104092155.f39Lsgs19172@aslan.scsiguy.com> In-Reply-To: Your message of "Sun, 08 Apr 2001 09:57:33 %2B0200." <20010408095733.A581@schweikhardt.net>
next in thread | previous in thread | raw e-mail | index | archive | help
>It's a 4.2-R system. Here's the relevant part of the verbose boot >(without the new DDYS-T18350N because this makes the system hard to >use). The 68pin cable is about 60cm with 4 connectors every 20cm. The >active terminator was way expensive (DM50 = US$25). The 50pin cable is >150cm long, with 8 connectors spaced 1--------2-3-4-5-6-7-8, aic7880 >being at position 1, the terminated IBM DCAS at position 8 and other >unterminated SCSI2 devices at 5 and 7. The narrow cable is quite long. You might try distributing the devices more evenly along the cable. This gives better transmission line qualities. One other thing that might be affecting you is the firmware version on the DDYS drive. S80D is really bad. The latest is S96H. >(ahc0:A:3:0): Sending SDTR period 19, offset f >(ahc0:A:3:0): Received SDTR period 19, offset f > Filtered to period 19, offset f > >...This repeats at 3Hz for a minute until this comes: That's to be expected. Any time a check condition occurs without a data transfer, we renegotiate. -- Justin To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200104092155.f39Lsgs19172>