lawrence@chinet.chi.il.us ("Lawrence B. Kreighbaum Jr.") (07/12/90)
Very good article. Are you saying that the big disk (697M I believe) is ESDI rather than SCSI? I have a DN3500 and DN4500 with the WD controller and the big disk. I believe that the mnemonic debugger level config command refers to the drive as SCSI. I was also led to believe the same by Apollo sales. Is it really ESDI? You mentioned an Apollo mailing list at this address. If this is a mailing list discussing Apollo related topics, I'd like to participate!
krowitz@RICHTER.MIT.EDU (David Krowitz) (07/12/90)
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The WD7000 controller is a multifunction controller. If you take a good look
at it, you'll see an external SCSI connector, an internal SCSI connector, a
floppy disk connector, a Winchester disk control connector, and two Winchester
disk data connectors. My internal 697MB disks are connected to the disk-control
and to the disk-data connectors. If they were SCSI disks, they would be connected
(ie. daisy chained) to the internal SCSI connector along with the internal ctape
units. I just opened up the DN3500 and checked the disks. They are Maxtor
XT-8760-E disks. It's my impression that these are ESDI drives. Running
/systest/size_scsi on my system returns the following:
Testing for 0:0
SCSI controller 0 present
Attempting to aquire device #0, on controller 0
Target 0: Removable Sequential (tape) ARCHIVE VIPER 60 21116-007 VP60S-07
Note that this sees the ctape, but no disks, on the SCSI bus of the WD7000.
Check your disk's model number. If it's not a Maxtor XT-8760-E, I'd be
interested in knowing what model you have.
-- David Krowitz
krowitz@richter.mit.edu (18.83.0.109)
krowitz%richter.mit.edu@eddie.mit.edu
krowitz%richter.mit.edu@mitvma.bitnet
(in order of decreasing preference)thompson%pan@UMIX.CC.UMICH.EDU (John Thompson) (07/12/90)
> Very good article. Are you saying that the big disk (697M I believe) is ESDI > rather than SCSI? I have a DN3500 and DN4500 with the WD controller and the > big disk. I believe that the mnemonic debugger level config command refers to > the drive as SCSI. I was also led to believe the same by Apollo sales. Is it > really ESDI? To the best of my knowledge, except for the DN2500 and the new series 400 nodes all nodes use ESDI disks. You can certainly _get_ a 697MB SCSI disk (Maxtor 8760S, I believe). You can probably use it as a mounted volume on your node, after connecting it to the Western Digital controller (or other SCSI controllers?). I don't think that you can boot off it, though. (comments, Dave Krowitz?) John Thompson (jt) Honeywell, SSEC Plymouth, MN 55441 thompson@pan.ssec.honeywell.com As ever, my opinions do not necessarily agree with Honeywell's or reality's. (Honeywell's do not necessarily agree with mine or reality's, either)