Date: Wed, 24 Sep 1997 15:05:53 -0700 (PDT) From: Simon Shapiro <Shimon@i-Connect.Net> To: Wilko Bulte <wilko@yedi.iaf.nl> Cc: freebsd-scsi@FreeBSD.ORG, freebsd-hackers@FreeBSD.ORG Subject: Re: DPT Firmware Problem Message-ID: <XFMail.970924150553.Shimon@i-Connect.Net> In-Reply-To: <199709241855.UAA01561@yedi.iaf.nl>
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Hi Wilko Bulte; On 24-Sep-97 you wrote: ... > Simon, > > Could you get me more info on the problems with the StorageWorks > shelves? > I work in DEC Storage engineering and might be able to help you with > this > problem. What shelves do you use? WHich disks? Revisions etc. > > I assume things like the Shelve OK jumpers are set correctly? > > Wilko You are a godsend! We have two versions with two (related?) problems: The SE DPT 3334UW, with firmware 7L0, is connected to what DPT calls the 9W tower. It is a steel box with 7 slots and room above for two more 5.25" devices. It has two large power supplies shaped like a large wedge. The P/S each has a large handle made of rolled steel. In these, there are two enclosure light in the top-right corner; A green power light and a yellow fault light. With the 7L0 firmware, this light is ALWAYS on. Also, the disk modules (4GB Baracuda with 528 bytes sectors), will blink the amber light on the drive on and off constantly. Power on sequence makes no difference. This is the easy, less important one. The Differential cabinet is a different story. It is composed of a disk card cage which has 8 slots, for 8 drives, in an enclosue of our own design (please do not ask why :-). In the back there is an arrangement that takes three power supplies (DEC provided, in what appears a disk module enclosure). They are ganged together with a small power bus board that came from DEC. The bus is split into 2, 4 drives (each) busses. There is a SE terminator module on the back of this backplane. There is no jumper block in the other socket. Each bus goes, via 68 pin high density connector to a small (DEC provided) board that has a differential plug on the other side. The board is shaped like a 3.5" disk drive with a power + SE signal connectors on hte inside and 68 pin differential on the outside. These external connectors are connected to a 3334UWD DPT, one bus per channel. The symptoms are most annoying. The DPT will see only one half of the cabinet. Typically the right hand side. The only way to see the whole cabinet is to bypass the DIFF-SE boards and plug a SE controller directly into the backplane. This works perfectly. One more thing; the little board that generates the ``shelf good'' from the different inputs is missing. I really do not know how/what our hardware guys did. I asked for documentation and have seen none. If you have access to these douments, I will LOVE to have them. Thanx for any help you can render. --- Sincerely Yours, (Sent on 24-Sep-97, 12:19:22 by XF-Mail) Simon Shapiro Atlas Telecom Senior Architect 14355 SW Allen Blvd., Suite 130 Beaverton OR 97005 Shimon@i-Connect.Net Voice: 503.643.5559, Emergency: 503.799.2313
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