deboni@fernando.llnl.gov (10/19/89)
I do not regularly read this newsgroup, but I have a question one or more of you may be able to answer, regarding Sun peripherals. My group recetnly bought a SCSI disk drive for our file server - a CDC Wren VI, made by Helios - and we're not having any luck getting it to work. Not being a Unix wiz, I need some assistance. Does anyone out there have any experience dealing with these things? We've got an Exabyte tap drive hooked to our SCSI bus, and we've hooked the disk drive to the back of it. The tape drive is not terminated (it seems to work fine that way, all by itself, which I don't understand), but the disk drive is. The wierd thing is, we can mount the disk drive, sometimes we can read from it, and occasionally we can even write to it; however, any attempt to access it always ends in some sort of lockup: the system load goes way up, and no files get moved. I'm at a loss. Please help. I'll summarize any answers and successes I have to this group when they occur. Reply to deboni@diego.llnl.gov. Thanks in advance! Tom DeBoni
mark@uunet.uu.net (mark galbraith) (11/09/89)
Be careful how you enable TERMPWR. On some Sun workstations, TERMPWR is *SHORTED* to ground. This can, as you would expect, cause many problems; including fried power supplies and motherboards. Notably, the problems described occured here at Delta on our older Sun-3/50 workstations. I do not have any information on the newer workstations. The moral is, check pin 25 (TERMPWR) on your host adapter connection, and if it is shorted to ground, do not allow TERMPWR to get back to the Sun. Mark Galbraith Voice: 415-449-6881 Programmer/Postmaster UUCP: uunet!deltam!mark "The opinions expressed are mine. "Where were you during the My employer's may be different!" Great Quake of `89??"