palkovic%almond.hepnet@csa3.lbl.gov (John Palkovic) (12/31/89)
I am forwarding this for a colleague. It was bounced the first time he tried to send it. Since the original message was sent we have succeeded in formatting the Wren disk by disconnecting the Emulex controller, connecting the Wren, and booting MUNIX. However our 4/260 refuses to boot from disk with both the Wren and the Emulex controller hanging from the SCSI bus. If we turn the Wren disk off it boots just fine. We have messed with the jumpers on the Wren to change it's SCSI id to no avail. Has anyone succesfully added a SCSI disk to a 4/260 with an Emulex controller? We are running SunOS 4.0.3 BTW. Please reply directly and we will summarize. Original message follows: I bought a 4/260 last April and asked for a SCSI disk controller. I never really looked to see what I got until the Wren-V-702 (SCSI) disk I ordered arrived earlier this week. Lo and behold, I discover that there is no obvious way to hook it up! So, I open up the chassis and I see that my machine does, in fact, have a Sun3 SCSI controller on the VME, but it has a disk which is plainly marked as ESDI and a couple of loose cables which look like they **might** actually hook into another ESDI disk. Between the VME/SCSI and the ESDI disk is an Emulex controller board of some kind. The 1/4" tape drive is SCSI. I'm confused. What so I do now? Here are the options as I see them: 1. Punt. Buy Sun's expensive, small, guaranteed-to-work disk (yuck!) 2. Put the SCSI I have onto a nearby 4/110, with a plain-to-see SCSI port, and mount it remotely on my machine 3. Take your expert advice on how to magically make the disk I have work on my machine 4. Trade it in for an ESDI Wren disk of about the same price and plug it into the spot reserved for a second Sun ESDI drive. (On option 4, how about the Wren VI 94196-766 ESDI drive? Can this be plugged into the 4/260 enclosure and be made to work?) How about some suggestions from out there? As they say, thanx in advance. Elliott McCrory Fermi National Accelerator Laborartory Batavia, IL Best bet email: mccrory@mdtf05.fnal.gov, mccrory@fnalad.bitnet
weber@cg-atla.agfa.com (01/15/90)
I'll not reply to your article point by point because you need some more important basic info: * The MD-21 does not support any and all disks. * The MD-21 does not support being connected to two different disks * There is room in the top of 3/260 for one tape, one MD-21 and two disks. Sun doesn't provide hardware to mount drives that they didn't sell. * Sun's do not support any or all disks * Bringing the SCSI bus out of a X/X60 package is not an sure thing. * You are better off buying the disks that are listed in the SUn format program. * Cables that fit do not imply that it will work.